(There) Ahead John FIRTH-SMITH Strut John FIRTH-SMITH Painting 3 Paul BOSTON Untitled Paul PARTOS Etude Friedrich VORDEMBERGE-GILDEWART Black with curves Antoni TÀPIES Die Fahne Hoch Frank STELLA Erosion (Staircase negative) Analia SABAN Erosion (Staircase) #2 Analia SABAN Untitled Harvey QUAYTMAN Abstract with Aboriginal motif James CANT The Location of Lines Sol LEWITT Relocation John FIRTH-SMITH Four Basic kinds of Straight Lines Sol LEWITT Yellow premiss Ian BURN Curved forms Barbara HEPWORTH Olympia Godfrey MILLER Enclosed spheres Stanislaus OSTOJA-KOTKOWSKI Untitled (The black window) Robert JACKS Arrival Sean SCULLY Zena Michael JOHNSON Thru a-z+ Louise NEVELSON Cadenza Len CRAWFORD Crimson Stanislaus OSTOJA-KOTKOWSKI Untitled green Paul PARTOS Composition Ludwig HIRSCHFELD MACK Terrain drawing #3 Peter ROBINSON Superknit 1 Robert ROONEY Hanoi red Lesley DUMBRELL Kind-hearted kitchen garden III Robert ROONEY