Artist: Robert Morris, American (1931 - ) Title: Security Walls from In the Realm of the Carceral Year: 1978 Medium: Aquatint Etching, Signed and numbered in pencil Edition: 150, AP 20 Size: 37 in. x 48 in. (93.98 cm x 121.92 cm) Price: $1500 Printer: Styria Studios, NYC Publisher: S & A Lithographic Plates, NYC Reference: Fig. 40 in "Robert Morris: Estampes et Multiples 1952-1998, Catalogue Raisonne" by Christophe Cherix, Geneve et Chatou 1999.