Created at a scale of 1:125,000, this map series was produced from 1883 to 1945. They represent an amazing resource to find historic sites, and are beautiful as vintage wall art. As a medium-scale map, they are detailed enough to show a good image, but general enough to cover a wide area.

These 1:24,000 scale, 7.5 minute maps are the standard for topographic mapping in Pennsylvania. Many people still prefer the classic quadrangles due to the unmatched level of detail, accuracy, and symbology honed over a 100-year period by dedicated USGS cartographers.