[SunkenCiv]

One of the purported participants in the program wrote a book about these claims.

https://search.brave.com/search?q=cia+telepathy+project+martian+civilization

some sci-fi about ancient extinct Martian civilization:

Inherit the Stars Mass Market
Paperback – February 12, 1978
by James P. Hogan
https://www.amazon.com/Inherit-Stars-James-P-Hogan/dp/0345257049

turns out someone made a movie sort of vaguely based on the book. Hogan went around the bend near the end of his life and became a 9/11 truther and Holocaust denier.

The Martian Chronicles (1979)
8:42
trekxx
3.15K subscribers
1,180,192 views
July 12, 2013
Rock Hudson speaking with Martian Terence Longdon.
https://www.youtube.com/watch?v=NfypTnKYN5s

[higgmeister]

Hogan went around the bend near the end of his life and became a 9/11 truther and Holocaust denier.

So, he was a stupid idiot then.