List of sources:
Cape of Good Hope. Civil Service list, 1908, 1910.
Cape of Good Hope. Report of the Surveyor-General, 1901.
Cape Society of Civil Engineers. Proceedings, 1903-1907, Vol. 1-5.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Grant-Dalton, A.T.
South African Society of Civil Engineers. Minutes of Proceedings, 1913, Vol. 11, Members.
South African who's who, 1908.
University of the Cape of Good Hope. Calendar, 1903/4.