Fonds consists of eleven photographic copies of pen and ink on linen drawings, executed by the Boston architect, Frank T. Lent, for two separate, yet similar, plans of a summer home designed for Dr. Edward Atkinson, to be located on Big White Calf Island in the Thousand Islands, Ontario. Also included are drawings for Bermingham House amd Carter House.
The fonds consists of correspondence, drafts of his books, poems, photographs and news clippings. Correspondents include W.B. Yeats, other members of the Yeats family, George Russell (A.E.), George Moore, John Eglinton and Padraic Colum.
Fonds comprises correspondence written by Alister Mathews to his client, Mary F. Williamson, in reference to the sale of old master drawings and watercolours (1956-1972). Also included are catalogues of works that Mathews had on offer (1949-1982, 1987) accompanied by the occasional photograph of a specific work. There are also a few invoices for purchased work. Also includes photographs of art bought and sold by Alister Mathews in the course of his work as an art dealer. Photographs record details and sales information on the reverse. Some correspondence with Fenella Cecil, John Sunderland, and Sir Anthony Blunt.