Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 1

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 2

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 1

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 1

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 2

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 2

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 2

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory : Made Under Instructions from the United States Treasury Department, Volume 1

Researches Among the Protozoic and Carboniferous Rocks of Central Kentucky: Made During the Summer of 1846

Third Report of the Geological Survey in Kentucky, made during the years 1856 and 1857, by D. D. Owen ... assisted by Robert Peter ... Sidney S. Lyon ... Leo Lesquereux ... Edward T. Cox

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota;: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department, Volume 2

Report of the Geological Survey in Kentucky, Made During the Years ... and ...

First- Fourth Report of the Geological Survey in Kentucky Made During the Years 1854 to 1859: Volume 3

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota: And Incidentally of a Portion of Nebraska Territory. Made Under Instructions from the United States Treasury Department

Report of a Geological Survey of Wisconsin, Iowa, and Minnesota; and ... a Portion of Nebraska Territory ... (Geological Report of a Survey of Portions of Wisconsin and Minnesota ...

Mineral Lands of the United States: Message from the President of the United States, in a Reply to a Resolution of the House of Representatives of the 6th of February Last, Concerning the Mineral Lands of the United States

First Report of a Geological Reconnoissance of the Northern Counties of Arkansas, Made ... 1857-58

Letter of the Secretary of the Treasury, Communicating a Report of a Geological Reconnoissance of the Chippewa Land District of Wisconsin, and the Northern Part of Iowa

Fourth Report of the Geological Survey in Kentucky, Made During the Years 1858 and 1859

Report of the Geological Survey in Kentucky, Made During the Years ... and ...