wrestlingcardking,
Are you interested in Nagurski because he wrestled? Another less heralded player from the 30s who wrestled only during the offseason came to mind for me - Father Lumpkin. He doesn't have any football cards, but he does appear in several of these matchbook sets.
Wrestling:
http://wrestlingdata.com/index.php?b...wrestler=13862
Football:
http://www.pro-football-reference.co...L/LumpFa20.htm