1977 - Project MKULTRA
Jump back to 1974 when a New York Times article alerted Americans to secret CIS programs funded during the 1950's and 60's. One such program was Project MKULTRA where research involved "covert drug tests on unwitting citizens at all social levels, high and low, native Americans and foreigns. Several of these test involved the administration of LSD to unwitting subjects in social situtions." Details of the program were outlined in Senate hearings in 1977 when additional materials about MKULTRA came to light. Most documents had been destroyed in 1973 but new information pointed to the disturbing fact that "the extent of experimentation on human subjects was unknown" but nearly 90 universities and research institutions across the country had been involved.
Check out the Project MKULTRA, the CIA's Program of Research in Behavioral Modification Senate Hearing from August 3, 1977 (Wilson Gov Pub Y 4.In 8/19:M 69) for more information.