The Gabriel Dumont Institute of Métis History and Culture Virtual Museum offers a vast collection of resources, including an incredible page of links to Métis-related websites.
https://www.metismuseum.ca/browse/index.php/15
https://www.metismuseum.ca/moccasin_telegraph.php
Video featuring French-speaking Métis in Manitoba, filmed in the 1970s:
https://www.onf.ca/serie/le-son-des-francais-damerique/saison1/episode13/