American sports official (1862-1914) who was one of the founders of the Amateur Athletic Union (AAU) in 1888; he was one of the most influential people in the early Olympic movement, and was a chief organizer of the 1904 Summer Olympics. Fountain pen signature, "J. E. Sullivan,” on the reverse of an off-white 3.5 x 2 card on the back of the calling/business card of Isidor 'Jack' Niflot (1881-1950). Niflot was an Olympic wrestler who won a gold medal at the 1904 Olympics in St. Louis. He also competed in the Intercalated Games in 1906 in Athens, Greece. This signature was one of many he collected from his teammates and officials while in Athens in 1906. In fine condition, with overall toning, and old adhesive residue on the back.
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