Here is a shot of the Winder Building, some time after the Civil War. It looks to be in quite a state of disrepair, and it’s amazing that this building is still standing and in use by the U.S. Trade Representative.
An Incredible Look at the Winder Building After the Civil War
“The Winder Building, at the corner of 17th and F Streets west of the White House, was built
in 1847–48 by William H. Winder, who leased most of the space to the U.S. government.
The Corps of Engineers made it their headquarters from then until 1889. The building,
seen here in the Civil War era, has been subject to very few alterations and still
stands today.”
From:
http://publications.usace.army.mil/publications/eng-pamphlets/EP_870-1-67/toc.htm