Willem Vorsterman was a leading printer in Antwerp in the first half of the sixteenth century. He printed two anthologies of the letters of St. Jerome, one in 1515, the other in 1533. These deserve attention in connection with Erasmus of Rotterdam, the renowned humanist champion and editor of Jerome. In its preface, the first anthology takes up the cause of humanist theology and invokes Erasmus' authority on the eve of his celebrated edition of Jerome. His name adds value to the anthology. The second anthology does not refer to Erasmus at all; nevertheless it yields traces of his editorial influence.