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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 Author Ludlow, William Full Title New species of fossils. Capt. Wm. Ludlow's exp. to Yellowstone Park, 1875. Plate. 1. H.M. Martin, del. T. Sinclair & Son, lith. Phila. (to accompany) Report of a Reconnaissance From Carroll, Montana Territory, on the Upper Missouri, to the Yellowstone National Park, and Return Made in the Summer of 1875, by William Ludlow ... Washington: Government Printing Office. 1876. Publisher [N. Peters, Government Printing Office] Author Ludlow, William Full Title New species of fossils. Capt. Wm. Ludlow's exp. to Yellowstone Park, 1875. Plate. 2. H.M. Martin, del. T. Sinclair & Son, lith. Phila. (to accompany) Report of a Reconnaissance From Carroll, Montana Territory, on the Upper Missouri, to the Yellowstone National Park, and Return Made in the Summer of 1875, by William Ludlow ... Washington: Government Printing Office. 1876. Publisher [N. Peters, Government Printing Office] 
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