topic

• Geology6
• Explorations and surveys5
• Pacific railroads5
• Discovery and exploration4
• Surveys4
• More Less

name

• Blake, William P. (William Phipps), 1826-19106
• United States. War Department. Office of P.R.R. Surveys6
• Ackerman Lithr3
• United States. Army. Corps of Topographical Engineers3
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collection

• Maps of North America6

place

• California6
• Nevada2
• Arizona1

genre

• Maps6
• Geological cross-sections5
• Geological maps1

publisher

division

• Map Division6

type

• cartographic6
• still image5