This should be a sticky...
Where are you getting them? They look a lot like the pics from the North American Ethnographic Collection Archives, but most I have never seen.
If anybody wants to, you can go to anthro.amnh.org/anthropology/databases/north_public/north_public.html
Googling North American Ethnographic Collection will get you there, too. You can search for bows by region. The Arctic region has some fascinating styles.