Books by Theme.

American History

Ancient History

Angels & Demons

Bestiary

Bible

Christian History

Conspiracy

History of piracy

History of science and technology

Grimoires

Middle Ages

Mythology

Occult Sciences

Old Maps

Paranormal

Secret History

Secret societies

Signs and Symbols

Space Exploration

The Holy Grail

The Templars

Unexplained Mysteries

UFOs and Aliens

World discovery

World History

Book series

"Captivating History"

"Hourly History"

"Forgotten Books"

"Very Short Introductions"