1. National Railway Museum (NRM) GWR B Series.
2. The National Archives (TNA), ZPER 38/13, Great Western Railway (London): Lecture and Debating Society Proceedings 1920–1921.
3. TNA, ZPER 38/26, Great Western Railway (London): Lecture and Debating Society Proceedings 1933–1934.
4. RAIL 1107/9, Railway Students’ Association, Proceedings of Sessions 1934–1936.
5. Chapman, Walter George. The 10.30 Limited. London: Great Western Railway, 1923.