There's only one thing you're not supposed to do if you're a UFO guru: write a science fiction novel about UFOs. Especially if it comes out before you supposedly met aliens (and the Pope.)
George Adamski famously photographed a set of UFOs flying in formation, in 1950. And he got an up-close-and-personal UFO shot a couple years later. Eventually, he met a Nordic looking alien named Orthon, who took him into outer space, talked to him about the dangers of nuclear war, and left cryptic symbols in his footprints. (Possibly including Swastikas?) Adamski also met Saturnians, and eventually attended a conference on Saturn. He became one of the greatest evangelists of UFOlogy, and claimed to have met the Pope, who gave him a special UFO-related medal.
And in the 1980s, he had a new career, recording trippy electronic pop with the help of Seal.
But now a 1949 novel, which Adamski wrote with the help of Lucy McGinnis, casts doubt on all his claims. The novel used to be nearly impossible to track down, but UFO researcher Timothy Green Beckley brought it back as a print-on-demand title, which you can buy on Amazon.
And sadly, it turns out Adamski's 1949 fictional account is oddly similar to Inside The Spaceships, his retellings of his supposedly true 1950s encounters with Orthon and the gang, according to Skeptic Report:
To your surprise you will discover that these two books give exactly the same descriptions of space (with the fireflies), the Moon (with snow on mountains, forests, lakes, artificial hangers and even small running animals), the scout ship (with the great lens in the middle of the cabin and the graphs on the walls), the mother ship (with its two "skins"), and even little details such as the portrait of the Great One in the mother ship, the famous Saturnian badge with the balance, etc... You will also be pleased also to see that the Masters' pompous statements are exactly the same, something that demonstrates that Adamski had a poor imagination and was unable to create new or original philosophical concepts.
So how could Adamski have written exactly the same account of his alien encounters years before they happened? There's really only one explanation: Orthon visited him earlier than we realized, and he tried to pass off these events as fiction at first. Just remember: Orthon the Nordic alien is looking over your shoulder as you read this.