By the way, Roy Thinnes did/does (?) believe in UFOs as alien. While the show was on, he appeared at a UFO convention, where people told him the show might just get the aliens PO'd at us...
MT,
Roy Thinnes' appearance at a 1967 ufo conference in New York City is mentioned in James Moseley's wonderfully acerbic "tell-all" ufo book, entitled "Shocking Close to the Truth."
Mr. Moseley recounts his many dealings over the years with such prominent members of ufology (or "ufoology," as Mr. Moseley refers to it) as Maj. Donald Keyhoe, Dr. J. Allen Hynek, "Prof." George Adamski, Stanton Friedman, and Bud Hopkins, to name but a few.
The book is sort of ufology's answer to former New York Yankee pitcher Jim Bouton's irreverent, tell-all baseball book, "Ball Four." It's great fun and I highly recommend it if you're interested in this subject.
Bob
PS I just loved Mr. Thinnes' unique interpretation of the original Rev. Trask as a pompous, hidebound, and "somewhat" flatulent cleric/witch hunter on the Dark Shadows remake in the early 1990s.