| Location | Source | Date | Page | Caption | Uniform | Type |
|---|---|---|---|---|---|---|
| CLASSIC BASEBALL CARDS, Frank Slocum (1912 T207) | 1987 | 207-7 | O'Toole, Pittsburg Nat. | Pittsburgh NL | Posed pitching | |
| VINTAGE & CLASSIC BB COLLECTOR Issue #24 | Jan., 2001 | 83 | Fatima Pittsburgh | Pittsburgh NL | Team | |
| 1912 T207 | 1912 | Pittsburgh NL | Posed pitching | |||
| http://www.baseball-reference.com/bullpen/Omaha_Rourkes | 2007 | 1916 League Champs | Omaha m.l. | Team | ||
| OOTP Baseball | http://tinyurl.com/3y2eq5v | Jul., 2010 | Marty O'Toole | New York NL | Head shot |