The Chief -- Film Description:
"Documentary portrait on John Diefenbaker. Host John Drainie introduces the documentary which provides voice over commentary on Diefenbaker's recent defeat as Prime Minister and current struggle to maintain the leadership of the Progressive Conservative Party. Film presents 'the chief' in a variety of situations including: a fishing expedition in British Columbia; attending a Baptist worship service with his wife; strolling through Rockcliffe Park with his dog 'Happy'; riding the CN train from Saskatoon to Prince Albert; attending a Kinsmen's dinner; addressing a Conservative Party Convention. [...]"
-- Library and Archives Canada

Source:
"ArchiviaNet: Online Research Tool: Film, Video and Sound / ArchiviaNet : Recherche en ligne : Films, vidéos et enregistrements sonores." Library and Archives Canada / Bibliothèque et Archives Canada. https://www.collectionscanada.gc.ca/archivianet/. [English / French]