Friendly Interchange -- Film Description:
"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/.