The Socialist Sunday School collection comprises minutes, correspondence, reports, text books, attendance registers, account books, petitions, pamphlets, song books, greeting cards, biographical material on leading comrades and other material relating to the Socialist Sunday Schools and later the Socialist Fellowship. The collection also includes the minutes and correspondence of Young Socialist journal committee and an almost complete run of the Young Socialist, 1901-1971.
The collection includes the minutes of the national body the British Council of Socialist Sunday Schools, 1909-1929; complete minutes of the National Executive Committee from 1926-1971; Conference minutes 1923-1971; School reports submitted to the N.E.C 1912-1971 (incomplete).
Local branch records of Sunday Schools are also represented in the collection, including Halifax, 1905-1956; Huddersfield, 1923-1934; Minutes of the Yorkshire Union 1912-1951; Minutes of the North of England Union 1951-57; Fulham 1903-1963; East Barking 1953-1959 and Bradford Great Horton Street, 1964-1975. There are also minutes of the London Union from 1966-1973.