THE CIPHER OF ROGER BACON.
University of Pennsylvania Press, 1928. FIRST EDITION. Edges deckled; A FINE PREMIUM CLOTH VOLUME in dust jacket. Edited by Roland Grubb Kent. who also provided the foreword and annotations. Portrait frontispiece of Newbold, and thirty three full page plates. 224 pages, indexed. Royal octavo. (Item ID: G21-15501)