The Canadian Maritime provinces, New Brunswick, PEI, and Nova Scotia had many of their citizenry in that era migrate to Massachusetts, RI and CT for factory jobs. They were not illegals, but encouraged by companies in the New England area looking for workers. Many stayed, others returned, my point, there was a great deal of cross border activity. The Maritime provinces of Canada related more closely to New England than they did to the rest of Canada.
All so true...my best friend’s family all came from that area right around those times.