The book is available at Northwest Regional Educational Laboratory (I have not checked for other online sources).
Story of the Seasons from Warm Springs Reservation
The Beginning of the Earth from Warm Springs Reservation
The Blacktail Dance A Blackfoot Indian Legend
How Marten Got His Spots A Kootenai Legend
Lost in the Fog from the Coast Area
How to Be a Friend from Warm Springs Reservation
How the Morning and Evening Stars Came to Be An Assinboine Story
Raccoon's Black Eyes and Ringed Tail from Fort Hall Reservation
Coyote and Old Lady from Fort Hall Reservation
Coyote and Trout A Kootenai Legend
How the Milky Way Got into the Sky from Warm Springs Reservation
Inkdomi and the Buffalo An Assinboine Story
Medicine Horse from Fort Hall Reservation
The Good Hunter and Fisherman from the Coast Area
The Wild Buffalo Ride A Blackfoot Indian Legend
I Am a Rock A Crow Story
The Man Who Loved Shell Money A Skokomish Legend
Old Man Napi A Blackfoot Indian Legend
The Turtle Who Went to War A Sioux Story
Coyote and the Mean Mountain Sheep A Salish (Flathead) Story