topic

• Discovery & exploration1
• Explorations and surveys1
• Pacific railroads1
• Railroads1

name

• Abert, John James, 1788-18631
• Frémont, John Charles, 1813-18901
• Siebert, Selmar1
• United States. Congress. House1
• Warren, G. K. (Gouverneur Kemble), 1830-18821
• More Less

collection

• Maps of North America2

place

• West (U.S.)2
• United States1

genre

• Maps2

publisher

• U.S. Senate1
• War Dept1

division

• Map Division2

type