London, Lund Humphries Publishers, 1968, 1977, 1980, 1986. Red, blue, black and green cloth-covered boards (hardcovers) with bright silver titles on spine housed in pictorial dustjackets, 30 x 25, 5 cms., 418 pp.; 396 pp.; 241 pp.; 70 pp. with b/w text-illustrations and mounted color plates. Apart from a very tiny piece of paper of jeacket lower spine missing of Jorn in Scandinavia 1930-1953 a very fine set."