| Location | Source | Date | Page | Caption | Uniform | Type |
|---|---|---|---|---|---|---|
| Tony Szabelski Collection (from Times Staff) | 1934 | Albany Recruit Struts His Stuff For Cronin | Action | |||
| The Evening Star, Washington D.C. | Mar. 14, 1934 | C-1 | Mark is Nats' Most Erudite.... | Senators | Drawing of Head | |
| SABR website | http://bioproj.sabr.org/bioproj.cfm?a=v&v=l&bid=2307&pid=4402 | 2007 | Marc Filley | Can't ID | Head shot |