| Location | Source | Date | Page | Caption | Uniform | Type |
|---|---|---|---|---|---|---|
| THE NATIONAL LEAGUE ('87 ed.), Donald Honig | 1987 | 19 | Bob Ewing | Cincinnati NL | Pitching Pose | |
| CLASSIC BASEBALL CARDS, Frank Slocum (1904 Fan Craze) | 1987 | FC-9 | Bob Ewing, Cincinnati | Cincinnati NL | Upper body pose | |
| 1911 Spalding Guide | http://memory.loc.gov/ammem/spaldinghtml/spaldinghome.html | 1911 | Image 91 | Ewing | Philadelphia NL | Head shot |