topic

• Discovery and exploration1

name

• Gillespie, G. L1
• United States. War Dept. Office of the Chief of Engineers1

collection

• Maps of North America2

place

• Montana2
• West (U.S.)2
• Idaho1
• Rocky Mountains1

genre

publisher

• Published by authority of the Hon. the Secretary of War in the Office of the Chief of Engineers, U.S. Army1
• publisher not identified1

division

• Map Division2

type

• cartographic2