About the film
Wings of Mercy is a 21-minute 1947 Canadian documentary film made by the National Film Board of Canada (NFB), written, directed and produced by the team of Evelyn Spice Cherry and her husband, Lawrence. The film describes the formation and operational use of the Saskatchewan Air Ambulance service. The NFB production was later re-edited into a shorter, 11-minute film, Mercy Flight, released in 1948.
From the film's Wikipedia article (CC BY-SA 4.0).