License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Gottfried Rogg. Neu inventiert genealogischer Stamm-Baum der Griechisch Kayser... desgleichen ein Stamm-Baum der Türckischen Kayser (A newly invented genealogical tree of the last Byzantine emperor...as well as one of the Turkish sultan), ca.1730–57. The Metropolitan Museum of Art.