Signed and numbered in pencil by Clarke. From the 1972 limited edition portfolio entitled 'Radical Realism I', published by Mother Lode Editions and Hundred Acres Gallery. The complete portfolio included the following prints: 'Cafeteria' by Richard Estes, 'Paul's Corner' by Ralph Goings, 'Native Dancer' by Richard McLean, 'Rhine Chateau' by Malcolm Morley, and 'Arrested Vehicle with Red Seats' by John Salt.