| Abstract | Penn Pilot, a project sponsored by the Pennsylvania Geological Survey, is an online library of digital historical aerial photography for the Commonwealth of Pennsylvania. Using the interactive map provided on this website, you can browse, view, and download thousands of photos covering the Commonwealth from 1937 to 1942 and 1967 to 1972. The original photos are black-and-white 9” x 9” and 9” x 7” prints with a scale of 1:20,000. Some northeastern counties were flown between 1967-1972 from a higher altitude; the scale of these photos is 1:40,000. The vegetation condition when flown was “leaf-on.” |
