| Location | Source | Date | Page | Caption | Uniform | Type |
|---|---|---|---|---|---|---|
| GREAT 19th CENTURY ENCYCLOPEDIA OF MLB, D. Nemec | 1997 | 371 | John Clarkson | Braves | Pitching pose | |
| Brace Photo | Braves | |||||
| WHO'S WHO IN BB HISTORY, Lloyd Johnson & B. Ward | 1994 | 79 | John Clarkson | Cubs | Posed pitching | |
| BASEBALL'S BEST 1000, Derek Gentile | 2004 | 77 | 131. John Gibson Clarkson | Boston NL (capless) | Upper body pose | |
| The Sporting News | Aug. 16, 1886 | 4 | John G. Clarkson | Chicago NL (capless) | Head shot woodcut |