Encyclopedia of the Underground Railroad
J. Blaine Hudson
Mathematical Knowledge
Mary Leng & Alexander Paseau & Michael Potter
The Aswân Obelisk
Reginald Engelbach
Non-Monotonic Reasoning: Formalization of Commonsense Reasoning
Witold Łukaszewicz
Cunningham's Encyclopedia of Magical Herbs
Scott Cunningham
The Gnostics: The First Christian Heretics
Sean Martin