He later formed subsidiaries: the Pacific Fur Company, and the Southwest Fur Company (in which Canadians had a part), in order to control fur trading in the Great Lakes areas and Columbia River region.
Kasnije je formirao podružnice: Pacific Fur Company, i Southwest Fur Company (u kojem su Kanađani imali određenu ulogu), kako bi se kontrolirala trgovina krznom na rijeci Columbia i Velikiim jezerima.