The infallibility of the Pope at the Council of Constance; the trial of Hus, his sentence and death at the stake, in two letters by a member of the council, Fra Poggius, to his friend and brother in Christ, Leonhard Nikolai. Edited by Beda von Berchem. - Bracciolini, Poggio, 1380-1459. (C. Granville, 1930)