|   
                     
                     1900
                     
                    
                     
                     Plate CXXXVII. Fortymile Quadrangle, Ala
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXXVII. Fortymile Quadrangle, Ala
                     
                    | 
      
        |   
                     
                     1900
                     
                    
                     
                     Plate CXXVII. Coos Bay Quadrangle, Orego
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXVII. Coos Bay Quadrangle, Orego
                     
                    | 
      
        |   
                     
                     1900
                     
                    
                     
                     Plate CXXVIII. Roseburg Quadrangle, Oreg
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXVIII. Roseburg Quadrangle, Oreg
                     
                    | 
      
        |   
                     
                     1900
                     
                    
                     
                     Plate CXXIX. Tacoma Quadrangle, Washingt
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXIX. Tacoma Quadrangle, Washingt
                     
                    | 
      
        |   
                     
                     1900
                     
                    
                     
                     Plate CXXXV. Sandpoint Quadrangle, (Koot
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXXV. Sandpoint Quadrangle, (Koot
                     
                    | 
      
        |   
                     
                     1900
                     
                    
                     
                     Plate CXXXVI. Hamilton Quadrangle, Monta
                     
                    
                     
                     [Geologic Atlas, Geology Book]
                     
                    
                     
                     Plate CXXXVI. Hamilton Quadrangle, Monta
                     
                    |