u/yoozintardid

I've been collecting Steelers autographs for 10 years. I own over 1200 Steelers autographs from 750 unique Steelers in franchise history. Throughout my collecting I've taken an interest in the pre-merger era of the Steelers. I've been intentional about looking for particular players and

I've found it's very challenging to find some older autographs, especially autographs from the 30s and 40s. The main place I look is eBay, but if it's not there, I probably can't find it.

Are there any knowledgeable collectors or sports historians who know of any collections, websites, hobby locations, etc, where older autographs might be available? Any tips on how to make it so I can get notified when they appear on the market?