Tractatus solemnis et aureus de agnosendis assertionibus Catholicis, et haereticis
A Latin theological treatise on distinguishing Catholic from heretical assertions, printed in Venice in 1571 for a learned clerical and scholarly readership. Its pictures are woodcut decorative initials and ornamental capitals, with a Q and a D framed by foliage and a central face or mask, which a designer could borrow for medieval-revival letterforms and border ornament.
