Ars oratoria. Ars epistolandi. Ars memorativa
This is a fifteenth-century Venetian printed treatise on rhetoric, letter-writing and memory by Giacomo Publicio, issued by the printer Erhard Ratdolt, and aimed at scholars and students of classical learning. Its pictures are rows of black roundels, each holding a white woodcut emblem beside a letter, such as a sword, bull's head, tower, crown or fish, arranged as memory images a designer could adapt for a set of icons or badges.
