This appears to be well sourced, going back to the '40s. There are references to zero point energy, diseases from contact between individuals and Non-Human entities, magnetic field drives, antigravity, craft being shot down, etc.
If I’m not mistaken, I believe this is what Knapp gave Rep. Burchett.
the page count here is not as high as was originally indicated as being socialized (240 pages I believe)
Good catch. I believe that number was from the NewsNation host if I’m not mistaken.