The sous-fonds consists of four types of materials: correspondence, drafts of Day’s biography of Malcolm Lowry, research materials collected during the writing of the biography, and published materials, mostly reviews of Dark as the Grave Wherein My Friend is Laid by Malcolm Lowry, published posthumously, and co-edited by Margerie Lowry and Douglas Day. Correspondence is primarily between Day and publishers, including Oxford University Press and Harold Matson Co., the lawyer Richard G. Green, and Margerie Lowry. Drafts of Day’s biography include one typewritten, annotated draft of the first 42 pages and a handwritten draft of the first 47 pages on yellow legal pad paper. Research materials include typed reminiscences on Lowry by David Markson and James Stern, copies of letters sent to and by Lowry in 1950, and two copies of Margerie Lowry’s will, one from 1965 and one from 1966. Published materials include several reviews of Dark as the Grave, edited by Day and Margerie Lowry, a short story by Lowry published posthumously in Show, a copy of Time magazine with an article on Lowry, newspaper clippings, a few biographical articles on Lowry, and a copy of Lowry’s poem Sestina in a Cantina.