| Location | Source | Date | Page | Caption | Uniform | Type |
|---|---|---|---|---|---|---|
| BASEBALL MEMORIES 1930-1939, Marc Okkonen | 1994 | 134 | Cy Slapnicka | Civvies (Exec.) | Head Shot | |
| Sporting News | Nov. 20, 1913 | 3 | Champions of American Association of 1913 | Civvies | Team | |
| Sporting News | Oct. 22, 1914 | 5 | Twice Champions of the American Association | Milwaukee m.l. | Team | |
| OOTP Baseball | http://tinyurl.com/8ybrls | Dec., 2008 | Cy Slpanicka | Newton, KS m.l. | Head shot | |
| 2000 CUPS OF COFFEE, Marc Okkonen (unpublished) | 2007 draft | 204 | Slapnicka, Cyril Charles 'Cy' | Civvies | Head & shoulders |