A few of the letters have been entered individually. Many of the letters concern the publication of volumes of letters by BR and Feinberg's proposed book, Bertrand Russell in the USA. Correspondents include Anton Felton, Christopher Farley, Rayner Unwin, Harry Ruja, K. Blackwell, John G. Slater, Paul Edwards.

There are five files of correspondence in the box. File 1 contains letters from Edith Russell; those letters have been entered individually. It also contains newsclippings (mainly reviews of Bertrand Russell's America); South End Press catalogues; three b&w photographs and negatives of BR; an issue of Liberation and other materials. There are 10 files in total.