Horizontal Strata. Jacksonville, Ill. Geomorphic Cycle. New Comerstown, Ohio

1966

O'Brien, Emmett J

1:63k

Jacksonville, Edwardsville, Pana, Vandalia and Bunker Hill.

1876

Warner & Beers

Jacksonville

1983

1:24k

Lynnville

1983

1:24k

Jacksonville

1937

1:63k

Jacksonville

1937

1:63k

Jacksonville

1932

1:63k

Jacksonville

1932

1:63k

Map of Morgan & Scott counties.

1876

Warner & Beers

1:155k

Virginia

1932

1:63k