United States Army Corps of Engineers. Map of siege operations against the defenses of Charleston harbor, 1863 : showing batteries covering the descent upon Morris Island, July 10, and the subsequent operations resulting in the demolition of Ft. Sumter and the capture of Ft. Wagner & Batty. Gregg, September 7., Map, [1891-1895]; digital images, (http://texashistory.unt.edu/ark:/67531/metapth298643/ : accessed July 24, 2014), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting University of Texas at Arlington Library, Arlington, Texas.
Note: Inconsistencies in capitalization and punctuation within the Portal may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.