The game developed at first without an organizing body. A tournament in 1902 between Montreal and Trois-Rivieres was billed as the first championship tournament. Several tournaments, such as at the Banff Winter Carnival, were held in the early 20th century and numerous women's teams such as the Seattle Vamps and Vancouver Amazons existed. Organizations started to develop in the 1920s, such as the Ladies Ontario Hockey Association, and later, the Dominion Women's Amateur Hockey Association. Starting in the 1960s, the game spread to universities. Today, the sport is played from youth through adult leagues, and in the universities of North America and internationally. There have been two major professional women's hockey leagues to have paid its players: the National Women's Hockey League with teams in the United States and the Canadian Women's Hockey League with teams in Canada, China, and the United States.