Friendly Interchange -- Description du film [en anglais] :
« Animated from chalk drawings by artist Alma Duncan and filmed by photographer Audrey MacLaren, the short film is about the exchange of goods over the American/Canadian border and the relationship forged and fostered by two trading nations sharing one very long border. »
-- Library and Archives Canada

Source :
SCREEN CULTURE RESEARCH GROUP, CONCORDIA UNIVERSITY. « Canadian Educational, Sponsored, and Industrial Film Archive », Department of Communication Studies, Concordia University, http://www.screenculture.org/cesif/. [en anglais]