topic

• Discovery and exploration13
• Geology4
• Explorations and surveys3
• Indians of North America3
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name

• United States. Army. Corps of Topographical Engineers7
• Blake, William P. (William Phipps), 1826-19103
• United States. War Department. Office of P.R.R. Surveys3
• Williamson, R. S. (Robert Stockton), 1824-18823
• Abert, John James, 1788-18632
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collection

• Maps of North America14
• Lawrence H. Slaughter Collection of English maps, charts, globes, books and atlases1
• Maps of North and South America1

place

• California4
• United States4
• West (U.S.)3
• Alaska2
• Nebraska2
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genre

• Maps16
• Geological cross-sections3
• Military maps2
• Topographic maps1

publisher

• War Dept., U.S. Pacific Rail Road Explorations & Surveys3
• publisher not identified3
• U.S. Congress2
• Donnè au public, par And. & Henry de Leth ... sur le Pont de la Bourse au Pescheur1
• Explorations and Surveys, War Dept1
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division

type

• cartographic16
• still image3