Initially believed to be an image of canal lock #1. This was behind the former Grand Theater on Mill Street. The Delaware River is visible in the background.
From Martha Capwell-Fox, National Canal Museum: “If the photo is dated Aug. 20, 1955 that [labeling as Lock #1] cannot be accurate. For one thing, it looks very similar to the two photos we have that we know for sure were taken right after the canal closed.”