Gettysburg quadrangle, Pennsylvania : 15 minute series (t…. Statement of responsibility: mapped, edited and published by the Geological Survey. Includes quadrangle location map. Relief shown by contours and spot heights. Scale: Projection: Polyconic projection. Collection: 15 minute series (topographic) Repository: Pennsylvania State University. Libraries: Rights Statement: http://rightsstatements.org.
Gettysburg quadrangle, Pennsylvania : 15 minute series (t… from digital.libraries.psu.edu
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