When did the boston celtics win their first championship?
The 1956–57 NBA season was the 11th season of the National Basketball Association. The season ended with the Boston Celtics winning the NBA Championship (which would be the first of their 17 NBA titles), beating the St. Louis Hawks 4 games to 3 in the NBA Finals.
What season did the boston celtics win their first championship?
1956–57 1956–57 NBA season
1956–57 NBA season
No context provided
What date did the boston celtics win their first championship?
April 13 1957
1957–58 NBA season
https://en.wikipedia.org/wiki/1957%E2%80%9358%20NBA%20season
Boston Celtics
https://en.wikipedia.org/wiki/Boston%20Celtics
1956–57 NBA season
https://en.wikipedia.org/wiki/1956%E2%80%9357%20NBA%20season
The Boston Celtics (/ˈsɛltɪks/ SEL-tiks) are an American professional basketball team based in Boston. The Celtics compete in the National Basketball Association (NBA) as a member of the league's Eastern Conference Atlantic Division. Founded in 1946 as one of the league's original eight teams, the Celtics play their home games at TD Garden, which they share with the National Hockey League's Boston Bruins. 
Boston Celtics
The 1956–57 NBA season was the 11th season of the National Basketball Association. The season ended with the Boston Celtics winning the NBA Championship (which would be the first of their 17 NBA titles), beating the St. Louis Hawks 4 games to 3 in the NBA Finals.
1956–57 NBA season
The Boston Celtics are an American professional basketball team based in Boston, that compete in the National Basketball Association as a member of the league's Eastern Conference Atlantic Division. They were founded in 1946 as one of the league's original eight teams. The Boston Celtics won their first championship of their 17 NBA titles during the 1956–57 NBA season. In the championship game, on April 13 1957, they beat the St. Louis Hawks 4 games to 3 in the NBA Finals.