My last post included the Tattered Cover Bookstore in Denver. A commenter mentioned another bookstore, the Elliot Bay Book Company in Seattle, WA which is also within walking distance of Amtrak trains. The King Street Station also serves Souter Commuter Rail.
If you are thinking of taking Amtrak to or from Seattle this Thanksgiving weekend, you might want to book ahead. Booking ahead is also a good idea if you are thinking of going to Vancouver in December or January. Coach is 25% off for non-holiday travel booked before the end of the year.