Parts of Idaho, Montana and Wyoming territories

1871

Geological Survey of the Territories (U.S.)

1:634k

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

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

Sectional map indicating main automobile roads between Canada and United States

1931

National Development Bureau

1:3m

Lower Red Rock

1950

1:63k

Illnois Peak

1957

1:63k

Illnois Peak

1957

1:63k