Lot Essay
From the late 1960s onwards, the C and D shapes that had always had an important role in Frost's art began to assume a new vibrancy. As he wrote to Claude Rogers in 1967: 'You can do so much with the curves. You can make them full or thin, slow or fast. The tension brings vitality to the space around them - they ooze authority and life' (see D. Lewis, op. cit., p.113).