Pacific Northwest Trail
Pacific Northwest Trail. General.
Strickland, Ron. Pathfinder: Blazing a New Wilderness Trail in Modern America.
Pacific Northwest Trail. Guides.
Strickland, Ron. The Pacific Northwest Trail Guide: The Official Guidebook for Long Distance and Day Hikers. 
Pacific Northwest Trail. Memoirs.
No published books found. The following websites have accounts of through-hikes:
Haraldson, Sam.Pacific Northwest Trail – Thru Hike. [also on TrailJournals]
Hall, Roni. Roni (from Israel)’s 2006 Pacific Northwest Trail Journal.
This June, Sandstone Press will publish a new PNT book by famed hiker, Chris Townsend. Grizzly Bears And Razor Clams is an account of his 2010 PNT thru-hike.
Also, free, downloadable PNT topographic maps are now available on my Website, ronstrickland dot com.