To See the Invisible Man – 1963
Downward To The Earth – 1970
The Book Of Skulls – 1971
Dying Inside – 1972
The Iron Star – 1987
The Positronic Man – 1992
Travelers – 1999
The Millennium Express – 2000
The Colonel Returns to the Stars – 2004
A Piece of the Great World – 2005
The Emperor and the Maula – 2007
The Pope of the Chimps – 2013