topic

• Discovery and exploration9
• Explorations and surveys8
• Pacific railroads8
• Surveys6
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name

• United States. War Department. Office of P.R.R. Surveys10
• Blake, William P. (William Phipps), 1826-19109
• Williamson, R. S. (Robert Stockton), 1824-18826
• Ackerman Lithr3
• Sarony, Major & Knapp Lith3
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collection

• Maps of North America16

place

• Nevada2
• Arizona1
• Coast Ranges, Southern1
• Mother Lode1
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genre

• Maps16
• Geological maps7
• Geological cross-sections5

publisher

• War Dept., U.S. Pacific Rail Road Explorations & Surveys8
• publisher not identified3
• California State Mining Bureau1
• Office of P.R.R. Exp. & Surveys1
• State Mineralogist1
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division

type

• cartographic16
• still image7