The great Ulster United team of the 1926 season won the National Soccer League championship, the NSL Cup and were the unofficial Dominion Champions.
Toronto club Willys-Overland played in the Inter-Provincial League in 1927 and in the National Soccer League in the 1928 season.
Canadian National Team defender Robin Megraw played for First Portuguese in the NSL in the mid-1970’s. He later played in the North American Soccer League.
Canadian national team player Jimmy Galloway starred for Toronto All-Scots, Boston Wonder Workers, Ulster United, Detroit Celtics and England United during the 1920’s and 1930’s.
The McKinnon Football Club of St. Catharines were members of the National Soccer League in the 1929 season.
England United were members of the National Soccer League from 1935 to 1941.