v. 1. Prehistory and the beginnings of civilization, by J. Hawkes and L. Woolley.
v. 2. The ancient world, 1200 B.C. to A.D. 500, by L. Pareti. Assisted by P. Brezzi and L. Petech.
v. 3. The great Medieval civilizations, by G. Wiet and others.
v. 6. The twentieth century, by C. F. Ware, K. M. Panikkar and J. M. Romein.