Online Book Sources:  There are many books stores available on the web that have Oregon Trail and Oregon History publications available. These are a few that I have had dealings with. While I have had no problems with these sites, I take no responsibility for any problems that you might incur.

Oregon Trail Books:
Stone By Stone by Bev and Gary Stone features diary abstracts of the Oregon Trail paired with paintings by Gary Stone

OCTA's Book Store features trail journals and information on all of the primary trails

Bear Wallow Publications offers books on early Oregon history

Ghost Town Publications offers books on early Oregon and Oregon cemeteries

The Zumwalt Books offers books on the Zumwalt family

New and Rare Books:
The Arthur H. Clark Co. both new and rare book searches offered

Powell Book Store carries both new and rare books

Higginson Book Co printers and bookseller that specializes in genealogy and history

Search and Compare
Fetch Book Info allows you to easily compare prices of a particular book among major bookstores.

Book Finder  allows you to easily compare prices of a particular book among major bookstores

Amazon Book Store offers over 2.5 million titles on all subjects