Great Falls of the Missouri.

1815

Lewis, Meriwether

Falls and Portage.

1814

Lewis, Meriwether

1:133k

Idaho, Montana west.

1874

Asher & Adams

1:1m

Montana.

1875

Asher & Adams

1:1m

Idaho

1927

National Map Company

1:2m

Idaho

1880

Bolitho, Edwin

Railway Distance Map of the State of Idaho

1934

Leahy, J.F.

Idaho

1893

Wood Brothers

1:2m

Territory of Idaho, 1876

1876

U.S. General Land Office

1:1m

Idaho.

1924

Rand McNally and Company

1:1m