Those Roos Boys and Friends -- Description du film [en anglais] :
« Portrait of Galt-born filmmakers Len and Charles Roos. The brothers' careers are meticulously traced from around 1910 to the fifties. True pioneers, they travelled the globe, wrote extensively and Len was also an inventor. [Barbara] Boyden shows some of their more intimate antics in re-enacted scenes in which she plays the role of her grandfather Len. »
-- 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]