Illinois-Iowa Galena quadrangle : topography

Description:

Contour interval 20 feet.;"Surveyed 1909 and 1911.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500

Creator:

Geological Survey (U.S.)

Publisher:

Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.)

Provider:

University of Illinois Urbana-Champaign

Temporal Coverage:

1913

Spatial Coverage:

Illinois and Iowa

Access Rights:

Public

Format:

JPEG2000