Report of a geological exploration of part of Iowa, Wisconsin, and Illinois
Subtitle: made under instructions from the secretary of the Treasury of the United States, in the autumn of the year 1839, with charts and illustrations
By: by David Dale Owen, M.D., principal agent to explore the mineral lands of the United States. --
Contributors: United States. General Land Office.
Edition: Revised edition of author's Mineral lands of the United States.
Series: [U.S.] 28th Cong., 1st sess. Senate doc. no. 407; Senate document (United States. Congress (28th, 1st session). Senate) -- 28th Congress, 1st session, no. 407.
Publisher: Govt. print. off.]
Published: 1844
Place of publication: [Washington
Language: eng
Number of pages: 191
Subjects: Geology -- Iowa.; Geology -- Wisconsin.; Geology -- Illinois.; Mines and mineral resources -- Iowa.; Mines and mineral resources -- Wisconsin.; Public lands -- United States.
Notes: Report of John Locke, M.D. on barometrical observations, altitudes and geological sections: p. [147]-189.

Report on the timber, soil, and productiveness of the mineral district, by E. Phillips, sub-agent: p. 189-191.