upper left in plate: COLOSSAEI.RO.PROSPECTVS.6.; upper center in plate: .E.
(sale, Christie's, London, 29 November 1994, no. 53); (Christopher Mendez, London via David Tunick, New York); purchased 1994 by NGA.
- Hollstein, F.W.H. et al. German engravings, etchings and woodcuts ca. 1400-1700. 8 vols. Amsterdam: Menno Hertzberger, 1954-1868. Dutch and Flemish etchings, engravings and woodcuts, ca. 1450-1700. Vols. I-XV, XVIII, XIX. Amsterdam: Menno Hertzberge
- Riggs, Timothy A. "Hieronymus Cock: Printmaker and Publisher." Ph.D. diss., Yale University (1971): no. 7.