Bradley, Abraham. "Map of the United States exhibiting the post-roads, the situations, connections & distances of the post-offices, stage roads, counties, ports of entry and delivery for foreign vessels, and the principal rivers." Map. Philadelphia: s.n., 1796. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:8049g9359 (accessed April 25, 2024).