I have 8 books in this series from around 1972, #1 Life Before Man, #2 The Missing Link, #3 The First Man, #4 The Neanderthals, #5 Cro-Magnon Man, #6 The First Farmers, #7 The Monument Builders, #8 The First Americans.   Books are in nice condition, they are 10.5 high, 9.25 wide, .50 thick and weigh about 1 lb. 8 oz. each.  No ISBN#s and I could mess around posting each one but the group of 8 is better. If any one is interested , contact me and let's see what we can work out.  All I want is my postage money back.    Clyde:}