With a little permit search I found the company name too, as well as the inspector.
You found a 1939 permit in a permit search? That's amazing! AFAIK our database here only goes back to 1980. I don't know if it is even possible to find a pre-war permit.
I remember finding a newspaper in a wall about ten years ago. I couldn't find a date, but it had an ad for "the NEW Oldsmobile", which looked like about a 1910 model. There was also an ad for a local bank which boasted "$100,000 Capital".
