Pellucidar

Published by Methuen February 1923 with 6 plates by J Allen St. John & 8 pages of adverts

Cover by J Allen St. John as US edition with slight alteration

Published bt Methuen May 1924 binding also in Red

Cover by J Allen St. John

Published by Methuen January 1939

'Tarzan at the Earth's Core' was published September 1938 (See Tarzan listings)

cover by G P Micklewright