Joseph Keiffer (American, b. 1952), "Moonrise, Early Summer", Acrylic on Canvas, 1998, signed lower right, signed and dated verso, black frame. Image: 15.5" H x 23.5" W; frame: 20" H x 28" W x 0.75" D. Provenance: The Estate of Alton G. Marshall, former aide to Nelson Rockefeller and President of Rockefeller Center.