The Ontario Genealogical Society
Durham Region Branch OGS
Essex County Branch OGS
Haldimand County Branch OGS
Kingston Branch OGS
Lambton County Branch OGS
London-Middlesex County Branch OGS
Niagara Peninsula Branch OGS
Nipissing District Branch OGS
Oxford County Branch OGS
Thunder Bay Branch OGS
Wellington County Branch OGS