In the SC&A vertical files, there is a nice selection of images of Van Vleck Obersvatory, one of which I came across this week. It’s undated, but judging from the landscape, I would estimate that the photograph was taken sometime in the 1920s or ’30s. That’s the iconic Douglas Canon in the foreground. You can read more about the Douglas Cannon here. This is the same view today:
Where is the Douglas Cannon now?
Hugh Lifson ’59