There is one place named O.S.A. Lake in Canada.
All places in the world called "O.S.A. Lake".
Wellington (4)
Windsor (4)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Havelock (3)
Sidney (3)
Centreville (3)
Princeton (3)
Borden (3)
Cornwall (2)
Enterprise (2)
Hebron (2)
Lockeport (2)
Newcastle (2)
Roblin (2)
Sandy Lake (2)
Sydney (2)
Beaver (2)
Cambridge (2)
Charlottetown (2)
Delta (2)
Georgetown (2)
Kildonan (2)