Ninety-two letters and cards, 1938-1960, from John Cowper Powys to C. Benson Roberts and his wife Jane, most of which have been published as Letters from John Cowper Powys to C. Benson Roberts, edited by the recipient (London, 1975); together with a letter and card, 1940, from Phyllis Playter, John Cowper Powys's companion, and two letters, 1954, from Littleton C. Powys.