1. Cd.2575 – Report of the Departmental Committee on Income Tax, 1905.
2. Cd.2576 – Appendix to the Report of the Departmental Committee on Income Tax, 1905.
3. Cd.9134 – White Paper: Income tax. Statement respecting allowances for wear and tear and obsolescence of plant and machinery, &c., 1918.
4. Cmd.618 – Report of the Royal Commission on Income Tax, 1920.
5. PA594 Daimler and Associated Companies, 1891–1943