Ville de Buckingham (1845-2002, Gatineau):
Reported in Flags in the Ottawa Valley [Cyr, Jacques and Kevin
Harrington. 1993. Flagscan [fsc] 30] as
white with coat of arms. (Poor image quality).
Municipalité de Montpellier (Papineau):
There seems to be a flag flying in front of city hall, next to the flags
of Quebec and Canada, on a website photo (Summer 2000).
Municipalité de Namur (Papineau):
The website shows a partial image of a white flag with municipal arms
(Summer 2000).
Municipalité de Shawville (Pontiac):
There might be a white flag with some kind of seal (Summer 1999).
Ville de Thurso (Papineau):
A photo on radio-canada.ca shows
Quebec Prime Minister Jean Charest in February 2005 in front of a flag
display, including a white flag with the city arms of Thurso (no lettering
visible, though there may be some).