Heroes in Training Olympian Collection Books 1-12: Zeus and the Thunderbolt of Doom; Poseidon and the Sea of Fury; Hades and the Helm of Darkness; ... the Birds; Ares and the Spear of Fear; etc.

Heroes in Training Olympian Collection Books 1-12 (Boxed Set): Zeus and the Thunderbolt of Doom; Poseidon and the Sea of Fury; Hades and the Helm of ... the Birds; Ares and the Spear of Fear; etc.

Hermes and the Horse with Wings (13) (Heroes in Training)

Hercules and the Nine-Headed Hydra (16) (Heroes in Training)