No idea really. When my Dad was a kid in the 30's he went out on the log booms with a pike pole when the tide was going out and the salmon hit the effluent from the mill and bellied up to get fish to sell or trade. Tribal fishers were all up the coast and locals traded salmon for Steelhead. In the late 20's until the war things got a bit strange with the depression. At the time of the treaty tribal folks hunted and fished whatever was available. All a Steelhead was to both the settlers and tribal folks was a fish, nothing more and nothing less.