Hello! I just got my hands on this bike and don't know what it is. The PO thought it was a Schwinn but I don't see any Schwinns that look like this and the serial number(s?) don't come up on the Schwinn database.

Any help IDing this frame?

My plan is to clean it up and clear it. The bike was in a fire at a local business, so I want to retain as much of the history as possible.