The first hardback books I ever remember owning { and I still have them today } were given to me by my Grandfather Mahoney. They were The Gods of Mars, Tarzan and the Ant Men, Tarzan and the Jewels of Opar and Tarzan the Terrible. I ended up reading all the the Bourroughs books I could find. Carson of Venus, Pellucidar, The Moon Men. I still have most of those old Ace paperbacks.