Constant, Betty van Garrel and Rem Koolhaas at Constant's studio Wittenburg

Constant interviewed by journalists Betty van Garrel and Rem Koolhaas at his studio, Wittenburg, because of the Premio Cardazzo award Constant recieved for his New Babylon project- and Cobra works, represented in the Dutch pavilion at the Venice Biennale. Interview published in Haagse Post-Beeldende Kunst De Stad van de toekomst. HP-gesprek met Constant over New Babylon, August 6, 1966.