So in "Puyallup-Nisqually" by Marian Smith, a 1940 anthropological record of Southern Coast Salish tribes that not only included the two named tribes but also other groups such as the Duwamish, Suquamish, Snohomish, etc to a minor degree; there recorded among legendary races in the section regarding religious views and practices are what Smith refers to as "Giants": Tsiatko or "Stick Indians".

Reading the descriptions of the Tsiatko given by tribal informants reveals a strong similarity to modern interpretations of "Bigfoot".

A tall, large, hairy, smelly, mysterious race of men that do not have proper villages but live in nests in the forest.

There are details that don't mix with Harry the Henderson version, however.

Communicated with a whistling language, stalked lone travelers, kept themselves hidden in the brush, had the knowledge to construct deadly bows and arrows, and pulled mischievous pranks on sleeping travelers like tying their moccasin laces together, hiding their supplies, or kidnapping their women and/or children for slaves and wives.

For every Tsiatko killed by a human, his fellows will kill six humans in retaliation from the killer's community.

The Southern Coast Salish didn't have very many positive opinions about the Tsiatko other than if up your village kidnapped a Tsiatko youth, taught it proper Lushootseed, and treated it well, it might show the village secret spots for food harvesting.

The description of a hairy giant might bring up ideas of something like Harry from Harry and the Hendersons but I would like to clarify that the Coast Salish idea of a hairy giant might be closer to "Guy with a hairy back" than "mysterious ape" as Coast Salish religious rituals during puberty result in almost all body hair being rubbed off or plucked out.

For example, a Puyallup Man from 1810 would consider a Euro-American explorer to be extremely hairy as that explorer did not rub or pluck off his body hair in his youth.

Will update when I get home, mobile dying.