International Brotherhood of Teamsters. Locals 170 and 404

The International Brotherhood of Teamsters, organized in 1903 when two leading team driver associations merged, is one of the largest unions in the U.S. Local 170, representing central Massachusetts, and Local 404, representing western Massachusetts, were both granted their charters with the Teamsters in 1933, and continue to thrive today. The records of these locals consist entirely of agreements between the union and local businesses.