https://collections.britishart.yale.edu/catalog/tms:50850|Red Matrices|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9338|Series 40cm A|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9339|Series 40cm B|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9341|Series 40cm C|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9342|Series 40cm D|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9343|Series 40cm E|print made by Gordon Househttps://collections.britishart.yale.edu/catalog/tms:9345|Series 40cm F|print made by Gordon House