The fonds consists mainly of correspondence (1942-63) from various writers and contributors to the Aylesford Review. Included among the correspondents are: Terence I.F. Armstrong (John Gawsworth), John Betjeman, Shelagh Delaney, Joseph Delteil, Eleanor Farjeon, Graham Greene, Alyse Gregory (widow of L. Powys), Arthur Machen, John Cowper Powys, Stevie Smith, Una Troubridge, Sylvia Townsend Warner and Louis Wilkinson. Also included in the fonds is a small amount of earlier correspondence from G.K. Chesterton to Father Vincent McNabb (1926) and from Eric Gill to Clare Pepler (1922-25).
The fonds consists of research files pertaining to C. S. Lewis and Owen Barfield, including manuscripts and manuscript copies, photocopies of articles and newsletters, research notes, correspondence between Lionel Adey and Owen Barfield and photocopies of correspondence between Barfield and C. S. Lewis.
The fonds consists of correspondence, creative and academic working papers, and materials relating to Lawrence Durrell and his circle. In addition to Brigham's published and unpublished works, the fonds also hold unpublished materials by other authors. The Durrell-related materials include Brigham's partial reconstruction of Durrell's working library from his home in Sommières where Brigham visited him. The library was also reconstructed from Brigham's research at the Centre de Rechercher de Lawrence Durrell, founded by Francoise Kestman-Durrell, which has since been sold to l'Université Paris X in Nanterre. The fonds also includes a number of photographs.
The collection consists of a handwritten letter to Henry Davray (1873-1944) concerning the foreign publication of Symons ' books and a holograph short critical assessment of Robert Browning. Also included is a copy of "Poetry World" (1929; Vol.1, No. 1) which contains a critical article: "Arthur Symons: English Decadent" by Richard Johns.
The collection consists of three handwritten letters to Helen B. Cruikshank. An enclosure of a quotation from Homer is included in the last letter. In the letters, he refers to Grieve (Christopher) [Hugh MacDiarmid], Eliot, Pound, and Joyce.
The collection consists of one handwritten and seven typed, signed letters to W. Harrison together with one typed, signed letter response. The letters are mostly concerned with the topic of spiritualism. Soutar refers to Henry Ford, Dawson Scott, Sir Oliver Lodge, Walter de la Mare, and Sir Arthur Conan Doyle.