This image provided by the Library of Congress, shows Myer Prinstein competing at the 1904 Olympic games in St. Louis. (Library of Congress, Meeting of Frontiers via AP)

This image provided by the Library of Congress, shows the athletics field at the 1904 Olympic games in St. Louis. The St. Louis Games were the first at which gold medals were awarded to winners, and they remain the only medals made entirely of gold. (Library of Congress, Meeting of Frontiers via AP)

This image provided by the Library of Congress, shows Thomas Hicks competing in the marathon at the 1904 Olympic games in St. Louis. The marathon may be the single most memorable event from the 1904 Games. The race took place in 90-degree heat on dusty roads with only a single water break, and 18 of the 32 athletes withdrew from exhaustion. . (Library of Congress, Meeting of Frontiers via AP)

This image provided by the Library of Congress, shows James Lightbody winning the 1,500 meter race at the 1904 Olympic games in St. Louis. The marathon may be the single most memorable event from the 1904 Games. The St. Louis Games were the first at which gold medals were awarded to winners, and they remain the only medals made entirely of gold. That proved lucrative for a trio of Americans — gymnast George Eyser, swimmer Charles Daniels and aptly named track star James Lightbody — that each won three gold medals. (Library of Congress, Meeting of Frontiers via AP)

This image provided by the Library of Congress, shows competitors in the marathon at the 1904 Olympic games in St. Louis. The marathon may be the single most memorable event from the 1904 Games. The race took place in 90-degree heat on dusty roads with only a single water break, and 18 of the 32 athletes withdrew from exhaustion. . (Library of Congress, Meeting of Frontiers via AP)