The William H. Gass Papers consist largely of his own manuscript material: manuscripts and proof material toward his books, drafts of various stories, essays, and reviews, interviews, and a miscellaneous assortment of notes and other materials. Also present is a substantial amount of professional correspondence, primarily with universities, magazines, and publishers, as well as with his colleagues in academia and in the literary community.

The Richard Hazelton Papers consists materials relating to William Gaddis including correspondence, lecture notes, clippings, print material, and an interview with Hazelton.

Consists of correspondence, clippings, and photographs concerning the filiming of the "Battle of St. Vith" and William Gaddis. Gaddis served as writer and Low served as producer for the "Battle of St. Vith."

The Charles Monaghan Papers consists of materials relating to Monaghan's relationship with William Gaddis as an early Gaddis promoter. Includes correspondence from William Gaddis, Jack Green, Aaron Asher, Douglas M. Davis, Steven Moore, Ormonde de Kay, and Mimi O'Keeffe. Also, includes other various Gaddis-related material such as copies of Monaghan's interview with Ormonde de Kay and Bob Ginna, various Gaddis-I listserv materials, proof copy of The Dutton Review, etc.

The Donald Oresman Papers consists of correspondence between Oresman and William Gaddis, drafts, and source material toward Gaddis's book, A Frolic of His Own.