The Ultimate Plan for Greenbelt, Maryland shows the orientation of the garden city, with residential "Superblocks" surrounding the "Commercial Center" and "Community Building" (which would house a school and public library).
Graphic from Library of Congress / 1936

A snapshot from the summer of 1936 shows that construction at Greenbelt is well underway.
Photo from Library of Congress / Carl Mydans

Officials of the government's Resettlement Administration (RA) pose for a photo at the Greenbelt site in June 1936.
Photo from Library of Congress / Carl Mydans

Rex Tugwell (in white) was head of the Resettlement Administration when this photo was taken, in June 1936. He would resign in December. 
Photo from Library of Congress / Carl Mydans