Map of N. Eastern Virginia and vicinity of Washington : surveys for military defenses / compiled at Topographical Engineers office at Division headquarters ofGeneral Irvin McDowell.
MLA
of Engineers, United States. Army. Corps. Map of N. Eastern Virginia and Vicinity of Washington : Surveys for Military Defenses / Compiled at Topographical Engineers Office at Division Headquarters OfGeneral Irvin McDowell. The Corps], 1862. https://collections.library.yale.edu/catalog/15811246.
APA, 6th edition
of Engineers, U. S. A. C. (1862). Map of N. Eastern Virginia and vicinity of Washington : surveys for military defenses / compiled at Topographical Engineers office at Division headquarters ofGeneral Irvin McDowell. [Maps]. The Corps], https://collections.library.yale.edu/catalog/15811246.
