However , its main beers had been available in Montreal since 1878 through a distribution agency .
Labatt , founded in London , Ontario in 1847 , established itself in LaSalle , Quebec in 1952 .
Quebec 's main beers had been available in Montreal since 1878 through a distribution agency .
Labatt , founded in London , Ontario in 1847 , established itself in LaSalle , Quebec in 1952 .