topic

• Discovery and exploration6
• Explorations and surveys6
• Geology6
• Pacific railroads6
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name

• Blake, William P. (William Phipps), 1826-19106
• United States. War Department. Office of P.R.R. Surveys6
• Williamson, R. S. (Robert Stockton), 1824-18824
• United States. Army. Corps of Topographical Engineers3
• Ackerman Lithr2
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collection

• Maps of North America12

place

• Nevada2
• California, Northern1
• Pacific Coast (Calif.)1
• Riverside County1
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genre

• Maps12
• Geological cross-sections4

publisher

• War Dept., U.S. Pacific Rail Road Explorations & Surveys6
• General Land Office2
• U.S. Congress2
• James Munroe & Co1
• Lith. Bien & Sterner1
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division

type

• cartographic12
• still image6