|  | REFINE  Browse All : Exploration Book and View by Becker, Charles and Terry, A.H.
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       Author [Ludlow, William, 1843-1901, United States. Army. Corps of Engineer] Full Title Drawings of new fossils found on a reconnaissance of the Black Hills of Dakota, July and August 1874. To accompany report from Mr. George Bird Grinnell. .M. Martin, del. Thos. Sinclair & Son, lith. Phila. (to accompany) Report of a reconnaissance of the Black Hills of Dakota, made in the summer of 1874. By William Ludlow, Captain of Engineers, Bvt. Lieut. Colonel, U. S. Army; Chief Engineer Department of Dakota. Washington : Government Printing Office. 1875. Publisher Government Printing Office 
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