Map of the new convalescent camp, Fairfax Co., Va. four miles S.W. from Washington, D.C.
This is an 1863 map of the convalescent camp four miles outside of Washington. This was run by the U.S. Christian Commission, and below is a photo of their D.C. headquarters from 1865.
Maimed Soldiers and Others before Office of U.S. Christian Commission – Washington, D.C., April 1865
And, if we’re not mistaken, below is a photo of that camp in 1863, showing the U.S. Sanitary Commsion.
U.S. Sanitary Commission 1863
Source: The United States Army Heritage & Education Center