topic

• Geology7
• Pacific railroads7
• Discovery and exploration6
• Surveys6
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name

• United States. War Department. Office of P.R.R. Surveys7
• Williamson, R. S. (Robert Stockton), 1824-18825
• Ackerman Lithr3
• United States. Army. Corps of Topographical Engineers3
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collection

• Maps of North America7

place

• California7
• Nevada2
• Arizona1
• Riverside County1
• Riverside County (Calif.)1
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genre

• Maps7
• Geological cross-sections5

publisher

division

• Map Division7

type

• cartographic7
• still image7