The Pergamum Collection publishes books history has long forgotten. We transcribe books by hand that are now hard to find and out of print.

Hodgkin's biography of Charlemagne also includes a history of the Franks prior to Charlemagne's reign.

• The History of the Crusades Volume 2
• History of Germany in the Middle Ages
• The History of the Crusades Volume 3
• The History of the Crusades Volume 1
• The Hittites: The Story of a Forgotten Empire