I'm not sure if you are talking about traditional, historical type books or the inlines...But here are a few that I keep in my library...I'm not home, so I don't rememebr all the authors...But if they interest you let me know and I'll get back...

Allen Eckert...."The Frontiersmen"
"Patriots"...AJ Langguth
Osburne Russell...."The Life of a Rocky Mountain Fur Trapper"
Fixfire 5...Great read on Flintlock Rifles
The Diary of Lewis and Clark...Unbelieveable what they went through...

That's all I can remember (have CRS today)...I'll check at home tonight...