Literatur
- [Fairbairn 1998, Bd. II, S. 537] Kommentar zu "fol. 17r" des Orazio Porta zugeschriebene MS 5105 der Biblioteca Nazionale Marciana in Venedig: "Anonymous draughtsman, middle to the end of the 16th century, Vienna, Albertina, Egger no. 149 (detail of the griffin frieze and profile of the base; Egger 1903, p. 46)."