I just got in the negative for this photo- the Camden Diner. The diner was located at the corner of Howard and Pratt, by Camden Station. Nothing in the photo still stands, having been redeveloped for the convention center and for Camden Yards. The photo was taken on June 19, 1948. The diner doesn’t seem to have lasted long under this name, I can only find records of it as such from the late 1940s through early 1950s.