Harris

1964

1:24k

Harris

1964

1:24k

Trenton

1981

1:100k

Centerville

1958

1:250k

Centerville

1954

1:250k

Centerville

1954

1:250k

Centerville

1954

1:250k

Iowa.

1842

Railway Distance Map of the State of Iowa

1934

Leahy, J.F.

A geological map of Iowa

1894

Keyes, Charles Rollin