Hills, John, (Surveyor). "Sketch of the skirmish at Petersburg, between the royal army under the command of Major Genl. Phillips, and the American army commanded by Major Genl. Stewben, in which the latter were defeated, April 25th, 1781." Map. London: Wm. Faden, 1783. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:z603vn42j (accessed April 30, 2024).