- Martin Luther had a wifeWilliam J. Petersen
- Astrology and the BibleWilliam J. Petersen
- 25 surprising marriagesWilliam J. Petersen
- Johann Sebastian Bach had a wifeWilliam J. Petersen
- The one year book of hymnsWilliam J. Petersen, Randy Petersen
- Another hand on mineWilliam J. Petersen
- The one year book of PsalmsWilliam J. Petersen
- 100 Christian books that changed the centuryWilliam J. Petersen, Randy Petersen
- Those curious new cults in the 80sWilliam J. Petersen
- C.S. Lewis had a wifeWilliam J. Petersen
- The one year great songs of faithWilliam J. Petersen, Randy Petersen
