This is a very confusing set to collect, and it is basically impossible to determine a checklist of at least the autographs available.
As you can read at the below link, the available autographs are not only players who played in the Federal League, but also players “
that could have played in the Federal League had they so chosen like Babe Ruth, Harry Heilmann, Dazzy Vance, Rogers Hornsby and George Sisler.”
https://www.historicautographcompany...mium-hobby-box
I only keep track of the T206 player autographs in their products. I’ve definitely seen Shaw, Barger, Bridwell, Jones, Camnitz, Tinker, and Bender — each of whom played in the FL.