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A. A. Humphreys, chief of engineers until June 1879. Succeeded by H. G. Wright. Date of publication for vol. 2. Astronomy and barometric hypsometry: 1877 (t.p.) Available also through the Library of Congress Web site as a raster image. v. <1, 3, 6-7) : ill., maps (some col.) ; 30 cm.
- Contributor: Geographical Surveys West of the 100th Meridian (U.S.)
- Original Format: Books
- Date: 1889