These papers were mainly transferred by John Sweet and include correspondence, college papers, biographies, obituraries and orders of service. The majority of the papers comprise correspondence between John Sweet and members of Selwyn and their relatives, some following the deaths of Selwyn alumni, which John used to compile obituaries for the Calendar. Additional papers were passed on after his death by his widow, Mary Sweet and his family and include further historical publications and also papers collected by John during his period as Secretary for the Cambridge Theological Book club (1969-2000).