Library of Congress, Prints & Photographs Division, FSA/OWI Collection, LC-DIG-fsa-8a31563. David Myers.
"Washington, D.C. Aerial view of a street corner, in front of the Willard Hotel, at 14th Street and Pennsylvania Avenue showing pedestrians and rather dense traffic in autos and street cars"
I noticed a cyclist at the top of this image, riding on the dotted line and it struck me that this is in the center of the street where the protected bike lanes are now (and where the streetcars ran in this photo), not all the way to the right. I'm guessing the dotted line is the "edge" of the streetcar space and the sign the cyclist is stopped at is the sign for a streetcar stop?