Claim: Art Longsjo (the speed skater) participated in the 1956 Summer and Winter Olympics, also known as VII Olympic Winter Games, held in Cortina d'Ampezzo, Italy.
Evidence: Arthur "Art" Matthew Longsjo Jr. (October 23, 1931 – September 16, 1958) was an American Olympian speed skater and cyclist. In 1956, he competed in both the Winter Olympics as a speed skater and the Summer Olympics as a cyclist. The 1956 Winter Olympics (French: Jeux Olympiques D'Hiver 1956, Italian: 1956 Giochi Olimpici Invernali) officially known as the VII Olympic Winter Games (French: Les VII Jeux olympiques d'hiver, Italian: VII Giochi Olimpici Invernal), was a multi-sport event held in Cortina d'Ampezzo, Italy, from 26 January to 5 February 1956.