The fonds consists of sixty-six letters (1962-1975) between Bradbrook and several individuals pertaining to the life of Malcolm Lowry. Also included are Bradbrook's notes on conversations with Wilfred Lowry and Russel Lowry, information on Lowry from a number of sources, and a list of Lowry's contributions to The Fortnightly.

The fonds consists of correspondence, drafts and research material arising from the publication of his two publications, "A Malcolm Lowry Catalogue" and "Malcolm Lowry: A Bibliography".