The International Brotherhood of Teamsters was founded in 1903. It has 1.4 million working members and 500,000 retirees in the U.S. and Canada. The Teamsters Union originally represented horse team drivers and stable hands. Over time, the union branched out and now represents a wide variety of occupations. The IBT celebrated its centennial in 2003. The union entered into an archival services agreement with The George Washington University in 2007 and an archivist was hired in 2008.