Added: 1958 aerial photo coverage for all of Mercer County, Pennsylvania! Explore Mercer—the county seat—and nearby towns to see how this historic industrial region looked from above in the late 1950s.
Added: 1958 aerial photo coverage for all of Mercer County, Pennsylvania! Explore Mercer—the county seat—and nearby towns to see how this historic industrial region looked from above in the late 1950s.