The Michael Millgate-C.P. Snow collection spans the dates 1958-1964 and includes 42 items of correspondence, typescripts, periodicals, and news clippings related to British literary scholar Millgate’s 1962 interview with British writer, scientist, and public official C. P. (Charles Percy) Snow. Snow’s letters to Millgate are related to the latter’s work on Snow and other literary matters.

Consists of seventeen letters written by British novelist C.P. Snow to American author Arthur Mizener between 1956 and 1961, as well as three letters written by Snow's wife, British author Pamela Johnson Hansford to Rosemary Mizener, and a press release.