The VIKINGS! Trilogy:

DeathQuest

The Mourning Trail

Quest for Valhalla

The EGYPTIANS! Trilogy:

SoulQuest

Song of the Sphinx

Quest for Osiris

Kid Appropriate Books:

The Grotesquerie Games

The Magic of Play

The Heart of Play

Young Adult Novels:

Souls of Steam

Jeremy Wrecker

The Seneschal

Adult Only Novels:

Viking Daughter

Dracula

Viking Son