* "Land of Smoke" (1989)
* "The Last Free Man" (1990)
* "The Stone Circle" (1991)
* "The Shaman" (1992)
* "The Viking Relic" (1993)
* "The Ghost Dancers" (1994)
* "The Aztec Curse" (1995)
* "The Mayan Prophecy" (1996)
* "The Inca Destiny" (1997)
* "The Aztec Secret" (1998)
* "The Mayan Codex" (1999)
* "The Inca Prophecy" (2000)
* "The Aztec Enigma" (2001)
* "The Mayan Revelation" (2002)
* "The Inca Apocalypse" (2003)
* "The Aztec Legacy" (2004)
* "The Mayan Resurgence" (2005)
* "The Inca Redemption" (2006)
* "The Aztec Empire" (2007)
* "The Mayan Calendar" (2008)
* "The Inca Sun" (2009)
* "The Aztec Warrior" (2010)
* "The Mayan Priest" (2011)
* "The Inca King" (2012)
* "The Aztec God" (2013)
* "The Mayan Hero" (2014)
* "The Inca Legend" (2015)
* "The Aztec Sacrifice" (2016)
* "The Mayan Ritual" (2017)
* "The Inca Festival" (2018)
* "The Aztec Eclipse" (2019)
* "The Mayan Solstice" (2020)
* "The Inca Equinox" (2021)
Μη μυθοπλασία:
* "The Mystery of the Maya" (1995)
* "The Truth about the Inca" (1997)
* "The Aztec Codex" (1999)
* "The Mayan Calendar" (2001)
* "The Inca Sun" (2003)
* "The Aztec Warrior" (2005)
* "The Mayan Priest" (2007)
* "The Inca King" (2009)
* "The Aztec God" (2011)
* "The Mayan Hero" (2013)
* "The Inca Legend" (2015)