A few other miscellaneous items from the '30s.
In 1937, Donut Corp put out a series that I believe was on the side or bottom of their Donut boxes. It has famous athletes including two football players: Red Grange and Knute Rockne:
Donut Corp. Thrilling Moments Series - Red Grange
Donut Corp. Thrilling Moments Series - Knute Rockne
Also in 1937, Dixie Cup put out a series of dixie cup ice cream lids with sports figures on them. Two are football players: Bronko Nagurski and Sammy Baugh. There are also premiums of these players that you could acquire and put in an album.
Bronko Nagurski Dixie Lid
Sammy Baugh Dixie Lid
Finally, Denby Cigar put out a premium of the world champion Chicago Bears in 1932:
The back has a letter to pro football fans:
Here is a companion piece to this premium and letter:
jeff