Mailbox Dick WATKINS Untitled Ludwig HIRSCHFELD MACK (Untitled) Harvey QUAYTMAN Queen of the night Sean SCULLY Moraca Michael JOHNSON Untitled André MASSON Untitled Paul PARTOS Rocky landscape Kenneth HOOD Thru a-z Louise NEVELSON Homage to the square: Autumn echo Josef ALBERS Cornish harbour Kenneth HOOD Untitled Peter BOOTH Beyond the outsider Robert JACKS Points of contact no 7 Victor PASMORE Attika + Victor VASARELY Etude Friedrich VORDEMBERGE-GILDEWART Four-in-one-bird (Moving) Frank HINDER Die Fahne Hoch Frank STELLA Untitled Harvey QUAYTMAN Pilot Dick WATKINS Planes of perception Erica McGILCHRIST 49 three-part variations using three different kinds of cubes/ 1967–68 Sol LEWITT The Location of Lines Sol LEWITT Incomplete Open Cubes Sol LEWITT Untitled (Red rectangle) Peter BOOTH Configuration Roger KEMP Putting on de Stijl Richard HAMILTON Flight in space I Roger KEMP The orchard Philip SUTTON Ascension Roger KEMP