Birrell, A., P. Robertson, L. Koltun, A. C. Rodger, and J. M. Schwartz. “Private Realms of Light: Canadian Amateur Photography, 1839-1940 - 2. On View: The Evolution of Amateur Photography”. Archivaria, Vol. 17, Jan. 1983, pp. 115-3, https://www.archivaria.ca/index.php/archivaria/article/view/11024.