Engineer Historical Studies

abundant arenaceous limestone Atlantic to Pacific Bad Lands Baird banks beds Big Sioux River Black Hills boat Bridger Brulés calcareous Canadensis Carboniferous Carex Council Bluffs Creek Cretaceous Dakotas east Eastern North America Eastern United expedition feet formation Fort Laramie Fort Leavenworth Fort Pierre Fort Union fossils G. K. WARREN geological Gouverneur K Gray Hall and Meek Harney Helix high central plains Indians Kansas Laramie latitude Leavenworth Leidy Lieutenant lignite limestone Linn longitude Loup Fork marl Meek and Hayden Melania Mexico Michx miles military Missouri River Mouth Big Sioux navigation Nebrascensis Nebraska Territory Niobrara River Nutt occidentalis party Pierre plants Platte Valley portion prairies Pursh rain region road rocks Rocky Mountains route sand Sandy bottoms shale shells Shyenne River Sioux City Snowden souri South Pass species specimens stream Tertiary Topographical Engineers Torr Unio Union Upper Missouri wagons Willd Yellow Yellowstone River