| Who What Where WhenREMOVEWHATWHERE | REFINE  Browse All : Geology and Index Page and Mining by Thompson, A.H. from 1898
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       Author Spurr, Josiah Edward Full Title (Table of Contents to) Department Of The Interior, United States Geological Survey, Charles D. Walcott, Director. Atlas To Accompany Monograph XXXI On The Geology Of The Aspen District Colorado By Josiah Edward Spurr, Samuel Franklin Emmons, Geologist In Charge. Washington 1898. Julius Bien & Co. Lith. N.Y. Publisher United States Geological Survey 
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