Ravenna Mosaic Co., St. Louis (sold 1925)
The Dark Ages: Loan Exhibition of Pagan and Christian Art in the Latin West and Byzantine East. Worcester, Mass.: Worcester Art Museum, 1937. no. 15, p. 22.
Weitzmann, Kurt, ed. Age of Spirituality: Late Antique and Early Christian Art, Third to Seventh Century. New York: The Metropolitan Museum of Art, 1979. no. 66, pp. 77-78.