Insurance maps of Union City, Erie County, Pennsylvania, June 1911. 1 map on 12 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in.
Sanborn Map Company (n.d.). Union City, Pennsylvania, 1911. Sanborn Map Company. https://digital.libraries.psu.edu/digital/collection/maps1/id/16150 (map)