With just about everything you'd like to know about this defunct and removed Oregon tourist and freight hauling RR, with links to other good sites featuring it. The Cottage Grove enginehouse was finally destroyed just last year.

http://www.brian894x4.com/OPandErailroad.html

This site has more info on the steam locomotives that were displayed at Cottage Grove, plus a complete all-time OP&E roster.

http://www.bjwrr.com/ontrack/guestfeature-op&e.htm