Showing The Plains Across: The Overland Emigrants and the Trans-Mississippi West, 1840-60 by John D. Unruh

Important places

• Fort Vancouver (1)
• Fort Hall (3)

Counties

• Clark (18)
• Bannock (11)

Regions

• Idaho (520)
• Washington (1,134)
• Nebraska (466)

Countries

• United States (64,950)

Other geographical areas

• Columbia Plateau (47)
• Rocky Mountains (370)
• Coast Ranges (USA) (388)
• Great Plains (2,255)