Contained herein is a fragment of an actual medieval book — not a reproduction! — printed in the fifteenth-century.

The present leaf comes from the Summa Praedicantium (or Greatest Proclamation ) written by the distinguished Dominican Theologian John Bromyard (d. 1390), of Oxford. The printer was Johann Amerbach (ca. 1440-1513) who was the foremost printer in Basel, Switzerland, at that time. This particular edition is not dated, but bibliographers are confident that it was printed before 1484. The paper size of the original leaf measured approximately 365 x 255 mm, and consisted of 53 lines of gothic type, printed in two columns of Latin text. Books that were printed before 1501 are described as incunabula (or incunables ) by bibliographers. For fanatics, here are the bibliographical references to this incunable edition: Hain 3993; Oates 2794; Proctor 7615; BMC III 747; ISTC ij00260000; Goff J-260 (locating copies in the United States at Bryn Mawr, Cornell, Harvard, Huntington Library, Library of Congress, Univ. of Chicago, Univ. North Carolina, St. Bonaventure University, Union Theological Seminary, and Yale).