Colton, J. H. (Joseph Hutchins). "J.H. Colton's Topographical map of seat of war in Virginia, Maryland, &c." Map. New York: J.H. Colton's Geographical Establishment, No. 172 William St., [1864?]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:kk91fs80r (accessed April 25, 2024).