Brief review to be added of Bruce Goldberg's book “Time Travelers from our Future: An explanation of alien abduction” (1988) (available on Amazon USA and on Amazon UK)
Brief review to be added of Goldsmith, Donald and Owen, Tobias “The Search for Life in the Universe” (1980) (available on Amazon USA and on Amazon UK)
Brief review to be added of Timothy Good's book “Alien Base” (1998) (available on Amazon USA and on Amazon UK)
Brief review to be added of Timothy Good's book “Above Top Secret” (1987) (available on Amazon USA and on Amazon UK)
Later published in a revised edition as “Beyond Top Secret” (1996) (available on Amazon USA and on Amazon UK)..
Brief review to be added of Timothy Good's book “Alien Liaison” (1991) (available on Amazon USA and on Amazon UK)