President Franklin Delano Roosevelt visited the DC-adjacent Greenbelt site at least twice. The first tour took place in November 1936. A subsequent visit was undertaken in February 1937, and is shown in the image above, as well as in the photo that follows. 
Photo from Library of Congress 

Reputedly, FDR was "very impressed" with the up-and-coming garden city.
Photo from Library of Congress 

The First Lady, Eleanor Roosevelt, visited the Greenbelt and Greendale town sites during 1936 and 1937. She was also directly involved in the planning of the Greenbelt project. About Greendale, she was quoted as saying "I wish  that every group of architects would have a woman sit at their elbows to give advice on such minor details as the proper placing of things which she uses in daily work."
Photo from Library of Congress