There is quite a bit of information about North American Pacific Northwest First Peoples on the web. I am biased I live there! As far as the the rest of the figures, you would be advised to look online for information about the relative region. The problem of course is that some information is rather vague, or hard to find as much of it is not written down, or is just now being written about.
I said I was biased, because I live in Washington state, grew up in Oregon, and was born in Western Canada (Alberta). My stomping grounds as a kid were the old growth leftovers from the logging companies. These are massive trees easily 6 feet thick and 80 feet high, with a wonderful aroma as well. The seas can moody and violent just as anywhere else, and the forests are VERY dark at night. Great and moody, very awe inspiring, and a perfect place to set a fantasy novel, although it has not been done based on the First Peoples who lived there. These figures could very well be a lifelong project for me.