Concurrence Patten, Sharon (American, 1943-1995) 1993

Honesty Patten, Sharon (American, 1943-1995) 1989-90

Concentration Patten, Sharon (American, 1943-1995) 1989-90

Refound Patten, Sharon (American, 1943-1995) 1994-95

from More Visible Markers in Twelve Exciting Colors (Thanks) McCollum, Allan (American, b. 1944) 2000

Rectangular Kaneko, Jun (American, b. Japan, 1942) 1998

Plate Leedy, Jim (American, b. 1929) 2001

Vertical Torque, Ember Mason, John (American, b. 1927) 2000

Adagio Autio, Rudy (American, 1926-2007) 1996

Spring Rain 2nd State Krug, Harry (American, b. 1930) c. 1970