Minute books, 1926-1927, and Annual reports, 1926-1938, of the Pioneer Health Centre Peckham, and volumes of press-cuttings about the Centre 1929-1961; files, publications and ephemera relating to the activities of the Centre, 1925-1952; files of the Pioneer Health Centre Ltd following the closure of the Centre, 1950-1999; books about the Centre; photographs, films and videos; papers of George Scott Williamson, 1910-1991, including personalia, correspondence, lectures, drafts of articles and books, notes; papers of Innes Hope Pearse, including personalia, correspondence, notes, manuscripts, drafts of The Quality of Life, reprints; materials relating to Scott Williamson and Pearse's research on pathology and the thyroid, including notes, lectures, manuscripts, correspondence, and reprints.