Main Line League was an independent League that was based in Philadelphia, Pa* and in Pennsylvania
1910 - Ardmore, Berwyn, Bryn Mawr, Delmar, Narbeth, St John's*, Strattford, Wayne
1911 - Ardmore, Bala Cynwyd, Berwyn, Bryn Mawr, Narbeth, Strattford, Wayne
1912 - Ardmore, Berwyn, Bryn Mawr, Narbeth, Strattford, Wayne
1913 - Berwyn, Bryn Mawr, Ithan, Narbeth, Strattford, Wayne
1914 - Berwyn, Bryn Mawr, Ithan, Narbeth, Union, Wayne
1915 Ardmore-Autocar, Berwyn, Brandywine*, Bon-Air*, Dun & Co.*, Lee Tire*, Norristown, Wayne
1916 No Teams enter or left the League
1917 No Teams enter or left the League
1918 Ardmore-Autocar. Dun & Co*, Dobson*, Lansdowne, Narberth, Upper Darby-Drexel Hill
1919 - Berwyn, Bryn Mawr, Havertown-St Denis, Narbeth, Paoli, Wayne
1920 Berwyn, Bryn Mawr, Havertown-St Denis, Narbeth, Paoli, Wayne
1921 - Ardmore, Bryn Mawr, Berwyn, Highland Park, Narbeth, Wayne
1922 - Ardmore, Bryn Mawr, Berwyn, Narbeth, Strattford, Wayne
1923 - Ardmore, Bala-Cnywyd, Berwyn, Narbeth, Overbrook, Wayne
1924 - Bala-Cnywyd, Berwyn, Narbeth, Oakmont, Paoli, Wayne
1925 - Ardmore, Bala-Cnywyd, Berwyn, Narbeth, Paoli, Wayne
1926- 1929 Not sure if this League played
1930 Berwyn, Dunkirk, Media, Narberth, Paoli