Catechetical documents of pope Pius X / translated and edited with a biographical note by Joseph B. Collins, S.S. ; introduction by Most Reverend Edwin V. O'Hara. - Papi (1903-1914 : Pius PP. X). (OLS)http://pul/name/14501; O'Hara, Edwin Vincent, vesc. di Great Falls, 1881- (OLS)http://pul/name/57265; Collins, Joseph. (OLS)http://pul/name/57264 (St. Anthony Guild Press, 1946)