|Continental soldier during the siege of Quebec, 1775-1776. The rebel army laying siege to Quebec was poorly equipped and supplied and had to improvise its own winter clothing and shelters.
Here for a zoomable image. I don't know but it looks like Canadians. What do you think? By Alexander Cluny (died 1770)
The American Traveller: or, Observations on the Present State, Culture and Commerce of the British Colonies in America, and the Further Improvements of which They are Capable. London: E. and C. Dilly and J. Almon, 1769.
Paper soldiers for the Seven Years war in America. Have a go page here