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Naval Appropriations Act for Fiscal Year 1891 (Battleship Act of 1890), June 30, 1890

Report of the Secretary of the Navy to Congress, by Secretary of the Navy Benjamin F. Tracy, October 15, 1889

The Gold and Coal Fields of Alaska Together with the Principal Steamer Routes and Trails, map by U.S. Geological Survey, 1898

Map of Alaska: Showing Known Gold-bearing Rocks, by the U.S. Geological Survey, 1898

Amendment to H.R. 6471, March 3, 1879

Representative Abram S. Hewitt of New York, photograph by Matthew Brady, ca. 1875

Geologic Map of the Grand Canyon . . . , Northwestern Arizona, map by George H. Billingsley for the U.S. Geological Survey, 2000

“Panorama from Point Sublime,” digital panorama comprising three illustrations by William Henry Holmes for the U.S. Geological Survey, Atlas to . . . the Tertiary History of the Grand Cañon District, 1882

“Geological Map of the Western Part of the Plateau Province,” map by the U.S. Geological Survey, Atlas to . . . the Tertiary History of the Grand Cañon District, 1882

Tertiary History of the Grand Cañon District with Atlas, by Clarence E. Dutton, 1882