topic

• Railroads43
• Pacific railroads26
• Explorations and surveys25
• Geology12
• Discovery and exploration11
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name

• United States. War Department. Office of P.R.R. Surveys15
• Blake, William P. (William Phipps), 1826-19109
• United States. War Department9
• Williamson, R. S. (Robert Stockton), 1824-18829
• Davis, Jefferson, 1808-18898
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collection

• Maps of North America78
• Atlases of the United States3
• Atlases of New York City2
• Maps of the World1

place

• United States17
• West (U.S.)17
• California16
• United States, West9
• Arizona6
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genre

• Maps84
• Geological cross-sections5
• Atlases3
• Charts3
• Diagrams3
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publisher

• War Department11
• War Dept., U.S. Pacific Rail Road Explorations & Surveys7
• A.H. Mueller3
• J.H. Colton3
• Northern Pacific Railroad3
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division

type

• cartographic84
• still image12
• text6