After spending close to an hour on the second and third floors of the Harmon building, my fellow explorer and I headed to the basement. We explored a little but the most interesting room we went into was one I hadn't ventured into before. A large pane of glass and door separates this room from the rest of the basement.
As it turned out, this room was used for glass cutting. Thank goodness for my partner-in-exploration because it had lots of interesting things to check out.
The following two pictures show a small, low cabinet that may have held items necessary for glass-cutting: