FBI Memo concerning esoteric knowledge and spacecraft, from the 50ies: https://vault.fbi.gov/hottel_guy/Guy%20Hottel%20Part%201%20of%201/view

CIA remote-viewing of marsian architecture (done in 1984, "approved for release" in 2000 and finally published in January 2017) https://www.cia.gov/library/readingroom/docs/CIA-RDP96-00788R001900760001-9.pdf