Aerial Photographs

Dates of photography: February, March, and April 1970
Photographed by: Keystone Aerial Survey, Inc. for the State Department of Transportation.

Set 1: ("Large Set")
Scale of photography: 1:6,000
Size of prints 20 ½" x 20 ½"
Scale of index 1:63,360

The "Large Set" includes only about half of the photos from the survey, but since the photographs overlap each other, the entire state is covered.

Set 2: ("Small Set")
Scale of photography: 1:12,000
Size of prints 9 3/8" x 9 3/8"
Scale of index 1:63,360

The "Small Set" is fairly complete. However, most photos have parcel boundaries or other project information marked in red which may affect their usefulness.

Copy print information:

Contact Keystone Aerial Surveys, Inc., PO Box 21059, Philadelphia, PA 19114-0559, tel. 215-677-3119.