Iowa.

1842

Railway Distance Map of the State of Iowa

1934

Leahy, J.F.

A geological map of Iowa

1894

Keyes, Charles Rollin

North Platte - Omaha. Omaha - Iowa City.

1939

White, Ruth Taylor

Iowa.

1869

Colton, G.W.

1:950k

Iowa.

1889

Cram, George

1:981k

Iowa.

1878

Gray, Ormando Willis

1:1m

Iowa.

1856

Colton, G.W.

1:1m

Iowa.

1845

Tanner, Henry S.

1:2m

State of Iowa.

1878

U.S. General Land Office

1:760k