Investigative journalist Tom O’Neill located two different versions of Dr. Louis Jolyon West’s 1956 report — the original and the altered one — in two separate archival sources:

1. The original 1956 report

O’Neill found the unedited, full 14‑page document in West’s personal papers at UCLA.

• UCLA inherited West’s archives after his death in 1999.
• O’Neill spent two months going through 200+ boxes before discovering the report.
• This original version contains West’s claim that he could replace true memories with false ones using LSD + hypnosis.

2. The altered version given to Congress

O’Neill found a different version of the same report in the National Security Archive at George Washington University, which holds the CIA’s MKUltra records released after the 1977 hearings.

• The original 14‑page report had been replaced by a 4‑page summary.
• The summary removed all references to memory replacement and real experiments.
• It presented only a theoretical discussion of LSD and dissociative states.

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