| Cole, DI. 2002. The building stones of Cape Town : a geological walking tour. Cape Town: Council for Geoscience. pg 8-10 |
| Greig, Doreen. 1970. Herbert Baker in South Africa. Cape Town: PURNELL. pg 239 |
| Radford, D. 1979. The architecture of the Western Cape, 1838-1901. A study of the impact of Victorian aesthetics and technology on South African architecture. Johannesburg: Unpublished Ph.D thesis. Dept of Arch. University of the Witwatersrand. pg 200 |
| Stewart, John . 2021. Sir Herbert Baker : architect to the British Empire. Jefferson, North Carolina: McFarland & Company, Inc.. pg 29, 36 |