Recueil de testes de caractere & de charges (1730)
Caylus, Anne Claude Philippe, comte de, 1692-1765, Mariette, Pierre Jean, 1694-1774, Leonardo, da Vinci, 1452-1519 · A Paris : Chez J. Mariette · leaf 37
Leonardo, da Vinci, 1452-1519 · Physiognomy · Head in art · Physiognomy in art
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.