Citation :
« 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. [en anglais] (p. 74)