A newly released collection of over 1,200 documents sheds light on the CIA's controversial MKULTRA mind control program.

Published Monday by the National Security Archive and ProQuest, this compilation provides a deeper look into one of the agency's most infamous operations.

The release comes half a century after Seymour Hersh's New York Times investigation exposed the abuses of the program, according to the Archive.

The collection was also unveiled 70 years after pharmaceutical company Eli Lilly & Company began supplying the CIA with LSD, the Archive noted.