The W.R. (Bill) Friday Papers contain correspondence, cartoons, artwork, advertising, published and unpublished materials created by Oregon cartoonist, William R. Friday. The collection spans the years 1972-2018, documenting Friday’s career as a cartoonist. The correspondence includes letters sent to Friday’s brother, Harlow, and his nephew Chris. Letters contain examples of his artwork, including note cards sent to Chris, and drafts of cartoons sent to Harlow that were later included in advertising work done for Harlow and Anna at their State Farm Insurance Agency. Researcher should note that copies of Friday's cartoons are included among his correspondence.

Published materials include his 1999 book entitled The Thin Black Line: 30 Years of Cartooning, two calendars depicting his artwork, and a coloring book. Unpublished works include examples of artwork depicting old model cars and corresponding backgrounds, as well as two stories written by Friday that illustrate his experiences at forest fire guard stations. The bulk of the collection comprises cartoons drawn by Friday that were featured in various publications, as well as in his book. They span the years 1973-1999, and are mostly original works, with some photocopies included. The final series in the collection contains works published by people other than William R. Friday. Included are a book written by Anna Friday (sister-in-law), illustrated by William R. Friday, and a book about ranger stations and forest fire lookouts by Les Joslin. This book contains an inscription to Bill Friday, and is signed by the author.