1937 V356 World Wide Gum #135 William Bill Stewart (last card of the set)

William Joseph Stewart (September 20, 1894 - February 14, 1964) was an American coach and sports official who was an ice hockey referee and coach, and also an baseball umpire in Major League Baseball. In his first season as head coach of the Chicago Black Hawks, he led the team to a Stanley Cup championship in 1938. Born in Fitchburg, Massachusetts, he was the first American-trained head coach to win the Stanley Cup. He was also an umpire in the National League from 1933 to 1954, and officiated in four World Series.

During baseball offseasons in the 1910s and 1920s, he generally coached Boston-area college and high school hockey teams. He became the NHL's first U.S.-born referee in 1928, and served in that capacity until 1941 excepting his two years (1937–39) as Chicago's coach. He coached the U.S. national hockey team in 1957, posting a 23-3-1 record, but the team was barred by the government from participating in the World Championships following the Soviet invasion of Hungary in 1956.