1. T.N.A., G.O. 148, Judicial, 7 May 1921; G.O. 425, Public (Police), 6 August 1929 p.46.
2. T.N.A., G.O. 596, Judicial (Police) (Conf.), 10 November 1923; G.O. 206, Judicial (Conf.), 16 April 1929.
3. Inspector-General to Chief Secretary, 31 May 1930, T.N.A., G.O. 354, Judicial (Conf.), 24 June 1930, pp. 1–7.