Interplanetary Space Travel Research
Association (ISTRA)
Nonprofit society founded in 1957 to promote public interest
in space activities (including UFOs and extraterrestrials)
and science fiction. Membership is free. The first issue of Space
Digest (1977) is available from ISTRA. Contact Robert Morison,
Editor, 30 Grosvenor Rd., London, E. 11, England.