Fonds consists of correspondence; manuscripts, ranging from fragments and rough drafts to printers' copies and page proofs, of novels, short stories, short story collections, stage plays, poetry and lyrics; screenplays by G. Vanderhaeghe and others based on G. Vanderhaeghe's works; articles, book reviews, essays, lectures and speeches; promotional material; articles, essays and thesis about G. Vanderhaeghe and his works; interviews with the author; miscellaneous material; works by other authors; and published work.

Fonds consists of personal and business correspondence; diaries, journals and writer's logs; research material; manuscripts and page and galley proofs of stage, radio and television plays, fiction and prose; playbills; reviews; photographs; and published work.