The Vincentiana Collection at DePaul University’s Archives and Special Collections today acquired a 1637 edition of the Roman Pontifical (Bishop’s Sacramentary) issued under the authority of Pope Urban VIII and the Archbishop of Paris. The volume belonged to Saint Louise de Marillac and is autographed: “ex libris Ludovici de Marillac.” This is an important and exciting purchase to add to DePaul University’s growing Vincentian Special Collections.