lower right, in block: V-'37 MCE; lower left, in pencil: MC Escher To Mr. C.V.S. Roosevelt, with kind regards, this almost 30 years old copy. Baam. March 20, 1907.
- "MC Escher Prints", National Gallery of Art, Washington, DC, July 25 - December 30, 1974.
- M.C. Escher: A Centennial Tribute, National Gallery of Art, Washington; San Diego Museum of Art; The Chrysler Museum of Art, Norfolk, 1997-1999.
- "M.C. Escher", Knoxville Museum of Art, 2000.
- Bool, F.H. et al. M.C. Escher: His Life and Complete Graphic Work. Amsterdam: Meulenhoff, 1981; English-language edition, New York: Harry N. Abrams, 1982.
- Schattschneider 1990, p.19.