I've got a few supplements I can't seem to find images of: Harry Harris, a boxing HOFer with no cards, and Terry McGovern, another HOFer from the turn of the (last) century. Only one I have scanned is this one:
Memphis Pal Moore, another HOFer.
I've also got a full page of Duke Kahanamoku somewhere, but no image of that either.
They're a little too big for my collecting tastes.
Does anyone collect the smaller images from the magazine itself? They are often the same image as a supplement or a full pager, just, er, smaller. For boxing, at least, they are a good source of collectible images of fighters with nothing else.