From the Tomb of Don Garcia Osorio, Chapel of the Sangre de Cristo, Church of San Pedro, Ocana, Spain.; J. Pierpont Morgan, London and New York (until 1917); Edouard Chappey
Rorimer, James J. Ultra-Violet Rays and their Use in the Examination of Works of Art. New York: The Metropolitan Museum of Art, 1931. p. 24, fig. 12.