For those of you who enjoy reading as much as I do, I might suggest checking out these books at AMAZON.COM. They are specialists in finding out of print books, with over a million titles in stock.
I recommend the following books with reference to the FUR TRADE ERA that we all love and portray: (click on the title for a link to Amazon.com)
2. The American Fur Trade of the Far West Vol 1, Hiram Chittenden, Paperback/Published 1986
5. The Fur Trade of the American West, 1807-1840/Paperback/1992
6. Harvesting Shadows : Untold Tales from the Fur Trade, H. D. Smiley/ Paperback/Published 1989
They literally have HUNDREDS of books on the Fur Trade Era. I keep ordering from them because they can get the older, out of print books that I frequently want to read.