John L. Sullivan Cabinet Photo 1890's Impressive photograph of the greatest figure in 19th century pugilism. The albumen image finds the Boston Strong Boy in formal garb, looking far more dapper than one might expect of the world's most dangerous fist fighter. A lack of studio stamping keep its origins a mystery but printed along the bottom of the front is "Your's Truly. John L. Sullivan." The image area has some light scrapes.