Edgar Rice Burroughs Science Fiction Classics (Barsoom #4-6)

1 Pellucidar - David Innes narrates return under Earth for Dian
2 Thuvia-Maid of Mars - Carthoris chases kidnapper Astok of Dusar
3 Tanar of Pellucidar - Tanar falls for Korsar captor Stellara
4 The Chessman of Mars - Helium Princess Tara caught by headless
5 The Master Mind of Mars - Ulysses Paxton narrates apprentice to brain transfer expert Ras Thavas
Illustrated B&W.