Chinook Jargon, and Indians, in a Washington state textbook

Lambert, Dale and Laura Lambert.  1998.  Washington: Past and present.  East Wenatchee, WA: Directed Media, Inc.

This is an elementary-school textbook about Washington state for Washington students.  I invite comment on some points that caught my eye:

I found no mention, actually, of Chinook Jargon.  The language might’ve made for a strong example of Washington’s cultural uniqueness.

“Coastal Indians rarely saw neighboring tribes.  Thick forests made traveling between tribal villages very difficult.” — page 60

“Communication was difficult because Coastal Indians spoke many languages such as Nootka, Salish and Chinook.”  [This is about Washington state!]  — page 61

“Coastal Indians used wool blankets, leggings, and robes to stay warm.  They wore capes called ponchos to stay dry.”  —  page 62

“Plateau tribes spoke many languages.  Interior Salish and Chinook were the most common spoken languages…They used sign language to communicate with other tribes.  Plateau Indians were tall, lean, and muscular.  Their faces were thin and angular.  Most Plateau tribes had more members than the Coastal tribes.”  — page 65 least two of the photos in the Plateau section are from the Idaho Historical Society…others are Edward Curtis-style romantic poses of Native people, sometimes wearing ceremonial regalia…

…I’m trying to figure out why “pemmican” is among the Key Terms for Chapter Five on Native Americans.  I haven’t located a mention of it in the text, and to my understanding it’s more a Plains cultural feature…