Parts of Idaho, Montana and Wyoming territories

1871

Geological Survey of the Territories (U.S.)

1:634k

Yellowstone National Park, Big Horn Mountains and adjacent territory

1881

Heubach, Emil

1:750k

Western territories. sheet no. 3

1876

Gillespie, George Lewis 18..-....; États-Unis. Corps of Engineers

1:2m

Map of Oregon, Washington and part of Idaho.

1860

[Die Vereinigten Staaten von Nord-Amerika, Blatt 1]

1876

Stieler, Adolf

[Die Vereinigten Staaten von Amerika in 6 Blättern, Blatt 1]

1892

Stieler, Adolf

Sectional map indicating main automobile roads between Canada and United States

1931

National Development Bureau

1:3m

Map of an exploring expedition to the Rocky Mountains in the year 1842 and to Oregon & north California in the years 1843-44

1845

Frémont, John Charles

1:2m

A new Map of the State of California, the Territoties of Oregon & Utah

1860

Meyer, J.

County map California; Map of the settlements in the Great Salt Lake country, Utah [inset] ; San Francisco Bay and vicinity [inset].

1860