The owner of the two teams Ambrose O'Brien, along with his family's money financed four teams in the NHA, including the Renfrew Millionaires and the Montreal Canadiens, then known as 'Les Canadiens'.
Tik pred sezono 1910 je liga razpadla, da bi dve njeni moštvi, Cobalt in Haileybury, pomagali ustanoviti novo ligo NHA.