12 works in 12 volumes, various 8vo, 4to, and folio sizes, most in original bindings. Condition generally fine. Including:

Featherstonhaugh, George William. Geological Report of an Examination Made in 1834 of Elevated Country Between the Missouri and Red Rivers. Washington: Gales and Seaton, 1835; Zirkel, Ferdinand. Report of the Geological Exploration of the Fortieth Parallel, Vol. IV: Microscopical Petrography. Washington: Government Printing Office, 1876; Ludlow, William. Report of a Reconnaissance of the Black Hills of Dakota Made in the Summer of 1874. Washington: Government Printing Office, 1875; Ludlow, William. War Department Report on the Reconnaissance from Carroll, Montana Territory, on the Upper Missouri, to the Yellowstone National Park, and Return Made in the Summer of 1875. Washington: Government Printing Office, 1876; Maury, Matthew Fontaine. The Physical Geography of the Sea. New York: Harper & Brothers, 1855; Owen, David Dale. Report of a Geological Survey of Wisconsin, Iowa, and Minnesota, and Incidentally a Portion of the Nebraska Territory. Philadelphia: Lippincott, Grambo, & Co., 1852; Owen, David Dale. Illustrations of the Geological Report of Wisconsin, Iowa, and Minnesota. Philadelphia: Lippincott, Grambo, & Co., 1852; Wheeler, George M. Progress Report Upon Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian in 1872. Washington: Government Printing Office, 1874; Report of the Board of Managers of the Lehigh Coal and Navigation Company to the Stockholders. January 9, 1837. Philadelphia: Printed by James Kay, Jun., & Brother, 1837; Report of the Board of Managers of the Lehigh Coal and Navigation Company to the Stockholders. January 8, 1838. Philadelphia: Printed by James Kay, Jun., & Brother, 1838. And 3 others.