Albrecht Dürer - Underweysung der Messung mit dem Zirckel und Richtscheyt in Linien ebnen unnd gantzen corporen, 1525.
Source: chaosophia218
Heinrich Cornelius Agrippa’s Demon Seals, originally drafted in the early 16th century (modern English translation and interpretation by Lupus Nensén).
Source: lupusnensen
