Mixed subject set that (as far as baseball goes includes Babe Ruth (AD), Bob Meusel 6C), Tris Speaker (9S), and John McGraw (KC).)
Set also includes boxers and actors as far as we know (pictures are some that I have picked up over the years)...
Keep in mind there is another set that appears to be all acors that have oval pictures in the middle (not square) that appear to be from a completely different set.