Agnosticus wrote:George Adamski was a fraud and a nutcase.
I've seen him called a pathological liar.
In the late 1920's, he started developing his philosophical ideas, a mishmash of somewhat-Xianity and sort-of-Theosophy. He even founded an organization for pushing his teachings, the Royal Order of Tibet, in 1934. It never got very members and it did not last for very long, and some years later, he and some of his followers moved to Mt. Palomar, home of the famous observatory. He and his followers first tried farming, then ran a diner, the Palomar Gardens Cafe. I don't know if any Palomar astronomers ever visited that diner, let alone offered to start a professional collaboration with GA's alleged ET friends.
A certain Ray Stanford visited him in the 1950's, and GA bragged to him that he had a big bootlegging operation going on under the cover of his ROoT, and that he hated FDR for shutting down Prohibition. Except that his ROoT was founded after Prohibition, it never got very big, and if GA was a big bootlegger, it would have been big news.
GA also claimed official endorsement for his actions, and some FBI agents visited him and told him in no uncertain terms to stop making such claims. But he kept doing so. A Critical Appraisal Of George Adamski The Man Who Spoke To The Space Brothers : Marc Hallet : Free Download & Streaming : Internet Archive
has scans of some FBI documents on him.