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Open today: 11:00 to 6:00


lower right in graphite: Jan Kubicek 70; lower left: 8/15-1; verso in graphite bottom center: Additive System of Horizontals and Verticals in a Square; lower right: 1976.324II; bottom righton sticker with red ink: 115864


Dr. Anne Baruch, Chicago; gift to NGA, 2002.