lower center on stone: PT CXIII; lower left in graphite: The Spanish Steps from Above; lower center in graphite: 20 prints; lower right in graphite: Prentiss Taylor July 1966
- Rose, Ingrid, and Roderick S. Quiroz.. The Lithographs of Prentiss Taylor: A Catalogue Raisonné. Bronx, NY: Fordham University Press, 1996, p. 113, no. 113.