Illinois, Potomac quadrangle.

Description:

Contour interval 10 feet;"Surveyed in 1931-1932";(W 88⁰00ʹ00ʺ--W 87⁰45ʹ00ʺ/N 40⁰30ʹ00ʺ--N 40⁰15ʹ00ʺ);Relief shown by contours and spot heights.;Shows roadway classification as of 1934.;1 map, colored;45 x 35 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:

1936

Spatial Coverage:

Illinois

Access Rights:

Public

Format:

JPEG2000