Quote:
"Evelyn Lambart has mostly collaborated with [Norman] McLaren but has herself made a few films including O Canada (1952) and a little teaching film The Lever (1966). She is an expert in setting up technical experiments in film-making, having earlier studied mathematics and physics. "
-- Ralph Stephenson

Source:
Stephenson, Ralph. Animation in the Cinema. London: A. Zwemmer, 1967. (p. 74)