Heritage is selling a page signed by WaJo and Cobb and suggesting it is a relic from the Addie Joss memorial game:
http://sports.ha.com/common/view_ite...2&Lot_No=80674
Aside from offering no proof to support that claim, the game itself was not referred to as an All Star game at the time, as it was delegates from a number of AL teams playing against the Indians as a benefit game. Also, Joe Jackson, was on the Indians team, not the start studded opposition, so his name on this paper also doesn't seem to fit.
Thoughts?