Atheism: A Rough History of Disbelief
2004
Ancient Roads from Christ to Constantine
2015
Drive Thru History: Acts to Revelation
2018
Drive Thru History: American History
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Drive Thru History: Ancient History
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God in America
2010
Drive Thru History: The Gospels
2015
Drive Thru History: Holy Land
2012
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A Believer's Guide to...
2023
Secret Files of the Inquisition
2006
Bible's Buried Secrets
2011
Spurensuche – Die Weltreligionen auf dem Weg
1999
Des nouvelles de Dieu
2004
The Western Tradition
1989
Catholicism
2012
Le vrai pouvoir du Vatican
2010
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Bible Secrets Revealed
2013
Deadly Journeys of the Apostles
2015
Divine Women
2012
Prayer and Reflection
2025