Victor Vasarely - Four Volume Presentation Set, [Galerie du Griffon, Neuchatel, Switzerland, 1969, 1971, 1974 & 1979]. Magnificent set of books on the Optical Art master of the 20th century. Volume 3 three inscribed To Dean Allen Austill in appreciation for your kind invitation - Vasarely plus a loosely enclosed 1984 press release for Vaserely to deliver a lecture at the New School for Social Research, New York, (at which he was introduced by Austill), all volumes quarto sized and extensively illustrated in colour, often with acetate overlays.