lower right, on stone: MCE V-'58; lower left, in pencil: MCEscher No. 16/40
- "The Graphic Work of M. C. Escher", Craig Gallery, Princeton University, 1971.
- "Prints by M. C. Escher", National Gallery of Art, Washington, DC, 1972.
- "By Design: Curious Deceptions in Art and Play", Xerox Square Exhibit Center, Rochester, NY, 1975.
- 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.