Clarion County, Pennsylvania Historic map, Library of Congress

Relief shown by contours and spot heights.
Alternate title in right lower margin: Clarion County, Pa. : N4057.5-W7911.5/29.5 X 31 : 1986.
"Map edited 1986."
In upper margin: United States, Department of the Interior, Geological Survey; Commonwealth of Pennsylvania, Department of Environmental Resources, Topographic and Geologic Survey.
Pennsylvania coordinate and UTM grids.
Includes notes, "Index to 1:24 000-scale maps, and location map.
Available also through the Library of Congress Web site as a raster image.