lower right,on stone: MCE / V'38; lower left, in pencil: MCEscher No. 10/14 II
- M.C. Escher Prints, National Gallery of Art, Washington, D.C., July 25 - December 30, 1974
- "By Design: Curious Deceptions in Art and Play", Xerox Square Exhibit Center, Rochester, NY, 1975.
- M.C. Escher: Landscape to Mindscape, National Gallery of Canada, Ottawa, 1995-1996.
- 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.