1996

Rux, Bruce “Architects of the Underworld” (1996) (available on Amazon USA and on Amazon UK)

1997

Rux, Bruce “Hollywood Vs. the Aliens” (1997) (available on Amazon USA and on Amazon UK)

1966

Shklovskii, I S and Sagan, Carl “Intelligent Life in the Universe” (1966) (available on Amazon USA and on Amazon UK) (SETI:)

1972

Sagan, Carl and Page, Thornton (Editors) “UFO's: A Scientific Debate” (1972) (available on Amazon USA and on Amazon UK)

1973

Sagan, Carl “The Cosmic Connection” (1973) (available on Amazon USA and on Amazon UK) (SETI:)

1975

Sagan, Carl “Other Worlds” (1975) (available on Amazon USA and on Amazon UK) (SETI:)

1977

Sagan, Carl “The Dragons of Eden” (1977) (available on Amazon USA and on Amazon UK)

1979

Sagan, Carl “Broca’s Brain” (1979) (available on Amazon USA and on Amazon UK)

1980

Sagan, Carl “Cosmos” (1980) (available on Amazon USA and on Amazon UK).Accompanying the television series of the same name, which first aired on 1980.0928. (SETI:) (Television:)

1994

Sagan, Carl “Pale Blue Dot” (1994) (available on Amazon USA and on Amazon UK) (SETI:)

1997

Sagan, Carl “The Demon Haunted World” (1997) (available on Amazon USA and on Amazon UK)

1998

Sagan, Carl “Billions and Billions” (1998) (available on Amazon USA and on Amazon UK)

1977

Sachs, Margaret and Jahn, Ernest “Celestial Passengers – UFOs and Space Travel”

1980

Sachs, Margaret “The UFO Encyclopedia” (1980) (available on Amazon USA and on Amazon UK)

1974

Salisbury, Frank “The Utah UFO Display: A Biologist’s Report” (1974) (available on Amazon USA and on Amazon UK)