topic

• Geology1
• Military reconnaissance1

name

• Ludlow, William, 1843-19012
• United States. Army. Corps of Engineers2
• Becker, C1
• Winchell, N. H. (Newton Horace), 1839-19141

collection

• Maps of North America2

place

• Dakota Territory1
• United States1

genre

• Maps2
• Geological maps1

publisher

• Corps of Engineers1
• U.S. Engineers1

division

type

• cartographic2