lower center in plate: Roorort Ÿ Roer Flu.; lower left in plate: Rhenus flu; by later hand, lower left in plate: 8; by later hand, lcV//in graphite: 30 (162) 770
Dr. and Mrs. George Benjamin Green, Virginia; gift to NGA, 1991.
- Pennington, Richard. A Descriptive Catalogue of the Etched Work of Wenceslaus Hollar 1607-1677. Cambridge: Cambridge University Press, 1982.
- The New Hollstein German Engravings, Etchings and Woodcuts, 1400-1700. (Wenceslaus Hollar, Simon Turner, author). Rotterdam: Sound & Vision Interactive, 1996-, no. 473, state ii/iii.