1878
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     62A. Central Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Central Colorado, Atlas Sheet No. 62 (A.
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1878
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     62C. Part Of Southern Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Southern Colorado, Atlas Sheet N
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1877
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61A. Parts Of Southwestern Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Parts Of Southwestern Colorado. Atlas Sh
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1879
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     52D. Part Of Central Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Central Colorado, Atlas Sheet No
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1879
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     52D. Land Classification Map Of Part Of 
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Land Classification Map Of Part Of Centr
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1877
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     53C. Part Of Central Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Central Colorado. Atlas Sheet No
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1876
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61C. S.W. Colorado, San Juan Mining Regi
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     S.W. Colorado, San Juan Mining Region. A
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1877
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61C. Economical Features Of S.W. Colorad
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Economical Features Of S.W. Colorado, Sa
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1878
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61D. Part Of South Western Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of South Western Colorado, Atlas Sh
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1877
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     65D. Part Of Eastern California.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Eastern California, Atlas Sheet 
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1879
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61B. Central Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Central Colorado. Atlas Sheet 61(B). Wey
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1875
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61C. SW Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Southwestern Colorado, Atlas Sheet 61 C.
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1878
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61C. Part Of Southwestern Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Southwestern Colorado, Atlas She
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1889
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     Map, river and land parties, exploring G
                     
                    
                 
              
                
                
                   
                     
                     Exploration Book
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Map showing routes of the river and land
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1873
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     Map Of The Areas Of Drainage To The Atla
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Map Of The Areas Of Drainage To The Atla
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1873
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     Skeleton Map Of the Territory of the Uni
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Skeleton Map Of the Territory of the Uni
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1873
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     Progress Map Of Lines And Areas Of Explo
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Progress Map Of Lines And Areas Of Explo
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1876
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     61B. Central Colorado.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Central Colorado. Atlas Sheet 61(B). Wey
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1877
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     70A. Parts Of Southern Colorado And Nort
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Parts Of Southern Colorado And Northern 
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1882
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     69. Parts Of Southern Colorado And North
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Parts Of Southern Colorado And Northern 
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1883
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     73. Part Of Southern California.
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Part Of Southern California. Atlas Sheet
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1881
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     84. Land Classification Map Of Part Of S
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Land Classification Map Of Part Of South
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         | 
      
      
    
    
      
      
      
            
      
        
      
        
          
          
          
          
          
          
           
          
          
          
            
            
              
                
                
                   
                     
                     1871
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
              
                
                
                   
                     
                     Preliminary Topographical Map ... Explor
                     
                    
                 
              
                
                
                   
                     
                     National Atlas
                     
                    
                 
              
                
                
              
                
                
              
                
                
                   
                     
                     Explorations And Surveys South Of Centra
                     
                    
                 
              
                
                
              
                
                
              
                
                
              
                
                
              
            
            
            
            
          
         |