| Who What Where WhenWHEREWHEN | REFINE  Browse All : Geology and Mining and Atlas Map and Geologic Atlas by Douglas, F.M.
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       Author Spurr, Josiah Edward Full Title Hunter Park Special Sheet. Geology Sheet XVII . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. F.M Douglas, Topographer in charge. Triangulation by E.M. Douglas. Topography by (R.C. McKinney). S.F. Emmons, Geologist in Charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Surveyed in 1893. Julius Bien & Co. Lith. N.Y. (1898) Publisher United States Geological Survey Author Spurr, Josiah Edward Full Title Lenado Special Sheet. Geology Sheet XX . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. F.M Douglas, Topographer in charge. Triangulation by E.M. Douglas. Topography by W.B. Gorse and R.H. Chapman. Surveyed in 1893. S.F. Emmons, Geologist in Charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898) Publisher United States Geological Survey 
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