Portrait of Donald Hankinson. Mantell, Walter Baldock Durrant:Family photograph albums. Ref: PA1-o-328-42. Alexander Turnbull Library, Wellington, New Zealand. http://natlib.govt.nz/records/22750271
worldcat.org
Wilson, James Oakley (1985) [First ed. published 1913]. New Zealand Parliamentary Record, 1840–1984 (4th ed.). Wellington: V.R. Ward, Govt. Printer. p. 202. OCLC154283103.