Portfolio Sixties Art / 1967 Netherlands, Amsterdam, Museumplein - Sigam Projecten (groundplan for event with 'Corpo-Cinema' by Theo Botschuijver & Jeffrey Shaw and 'Pneumatic Environment' by Graham Stevens, showing location of inflatables and projection systems; the project of Graham Stevens was cancelled because of financial reasons) This event was part of a series of open air events in the late summer in Amsterdam organized by Sigma Projecten