Bates, A. P. 'William J. Harding: pioneer photographer of Wanganui'. New Zealand Camera 18, No 2 (April 1971): 39--41

Crawford, R. Journal, ca 1861--81. qMS. WTU

Macgregor, M. Petticoat pioneers. Book 2. Wellington, 1975

Swain, L. Biographical notes of William James Harding, Wanganui photographer. TL 3/1/2, 19 August 1970. WTU

Woodburn, D. Letter concerning W. J. Harding. TL 3/1/2, 22 September 1979. WTU