‘The Curve over the Crest of the Hill’, at the Conference ‘Anglo-American Exchange in the Field of Post-War Sculpture c. 1945-1975’, The Getty Center, Los Angeles. (This paper I also delivered in June 2008 at the Arnolfini Gallery in Bristol for the AHRC Land Art Network on Culture of Landscape in Britain, 1967-1977, and again as a ‘Twilight Lecture’ at the Sainsbury Centre for Visual Arts at the University of East Anglia in November 2008.)