O.S.F.S.
O.S.F.S.: translation
†Catholic_Encyclopedia►Ecclesiastical Abbreviations
►Abbreviation of titles of the principal religious orders and congregations of priests
Oblati Sancti Francisci Salesii (Oblate Fathers of St. Francis of Sales)
The Catholic Encyclopedia, Volume VIII. — New York: Robert Appleton Company.Nihil Obstat.1910.