Welcome to the Forum, great find,,,,wish we get more of them ,,,,most "estates" throw out all the boxes and papers we have found over the years you got great stuff there, wish you lived closer, I'd trade or buy in a heartbeat,,,again, welcome aboard..
I too suffer from going to estate sales & hope to find these hidden jewels. About 4-5 years ago,, I found an OM box,, but somebody else wanted it too. But he didn't want it bad enough. I brought it home with me,, albeit paying more than I'd hoped to!