List of sources:
Cape of Good Hope. Civil Service List, 1896, 1910.
Cape of Good Hope. Report of the committee of the Albany Museum, 1906-1909; and Albany Museum, Annual report for 1910-1913.
Cape of Good Hope. Report of the trustees of the South African Museum, 1891-1894, 1897, 1899.
FamilySearch: Francis George Cathcart Graham. https://ancestors.familysearch.org/en/94JJ-FZF/francis-george-cathcart-graham-1853-1922
Journal of the South African Ornithologists' Union, 1909, Vol. 5(3): Roll of members.
Malherbe, D.F. du T. Family register of the South African nation(3rd ed.) Stellenbosch: Tegniek, 1966.
National Automated Archival Information Retrieval
System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Francis George Cathcart
Graham / F.G.C. Graham.
Ritchie, W. The history of the South African College, 1829-1918 (Vol. 2, pp. 849-904, List of alumni). Cape Town: T. Maskew Miller, 1918.
South African Philosophical Society. Transactions, 1898-1906, Vol. 10, 11, 16: Lists of members.