The Unbroken Line -- Film Description:
"This is a historical survey of the office of the Canadian governor general, from its inception through the inauguration of Edward Schreyer to office. Drawing from archival photos and using live-action film footage, The Unbroken Line gives us a look at some of the governors general (and their families) who have contributed to the Canadian political system."
-- National Film Board of Canada

Source:
National Film Board of Canada. "NFB -- The Unbroken Line." National Film Board of Canada. http://onf-nfb.gc.ca/en/our-collection/?idfilm=13045.