From the fantastic group Old Time DC comes a request from DDOT: When is this photo from?
It’s of the intersection of Key Bridge and M St. Some immediate clues start to pop out when you look at it.
For instance, it appears to be from after the construction of the Whitehurst, which you can see in the upper right corner:
That would place it no earlier than October 1949.
Also in the same detail is the Washington Flour mill. The mill itself stopped operating in 1969, although the building remained for quite a bit longer (most of it is still there, but it was partially cleaved.)
GM is not enough of a car guy to date the photo by the vintage of the automobiles. But perhaps you are? There are a handful of VW bugs, which became hugely popular in the 1960s, but were around well before then.
Anyone have a clue?