Manuscript Letter Signed “C. Card.le Rezzonico”. One page, 10¾x7¾, on a 4 page folded sheet. Became Pope in 1758. An eloquent letter of gratitude to Camillo Borgia. Clement XIII was elected through the influence of the Jesuits and, as Pope, issued Bulls opposing demands for suppression of the Society of Jesus. Autographs of Clement XIII are particularly rare.