1922. Sanborn Map Company. State College, Centre County, Pennsylvania : June 1922. 15 sheets. Scale not noted. Sanborn Map Company.
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1977. Aerial photographic map of Assiscunk Creek - Bristol in accordance with The Wetlands Act of 1970.
1978. Aerial photographic map of Big Timber Creek - Philadelphia in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Birch Creek - Marcus Hook in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Birch Creek South - Marcus Hook in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Burlington Island - Bristol in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Burlington Island East - Bristol in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Crafts Creek - Bristol in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Eight Mile Point - Frankford in accordance with The Wetlands Act of 1970.
1977. Aerial photographic map of Florence - Bristol in accordance with The Wetlands Act of 1970.