This is but a small sample of resources we've put together in our railroad library. We have links as well as books, videos, modeling documents and more. We are constantly adding new material.
I picked up a new book at Barnes and Noble the other night entitled Glory Days of Logging by Ralph W. Andrews, from Schiffer Publishing. It's 176 pages and has a nice glossy finish on every page. Loads of pictures to model from. If you have a chance to pick up a copy, do it. I have found very few pictures of log flumes online, but this book has a lot. Here's an example.
Please come visit our railroad library. We've spent a lot of time trying to put a lot of good modeling resources in one place. Thanks for coming by.
http://tracksidemodeler.com/index.php