bibliography :: Cranach Digital Archive https://lucascranach.org/index.php/Home/luther/bibliography
Ptolemaeus, Claudius (1520): PTOLE||MAEVS || AVCTVS
Ptolemaeus, Claudius (1520): PTOLE||MAEVS || AVCTVS
Kritischer Katalog der Luther-Bildnisse (1519-1530)
Ptolemaeus, Claudius (1520): PTOLE||MAEVS || AVCTVS