I'm assuming you're mostly interested in the LSD/"Mind Control" aspects of MKUltra.

Much of the official CIA/DoD documentation on MKUltra was destroyed during the 1970's in a big document purge around the time of the Church Comittee. After the revelations of Watergate as well as the era of the post J. Edgar Hoover FBI and revelations of COINTELPRO, the CIA began to purge a lot of it's documents as well as turn a lot of them over.

Much of their clandestine works that were being conducted inside the U.S. with testing and experimentation, as well as it's working with the FBI on counter-espionage were shut down, however MKUltra was officially shut down in '73.

Much of the MKUltra research work was basically "outsourced," to universities, pharmaceutical companies, and research and teaching hospitals. It's a well known and established fact that known psychologists and psychedelic researchers received government grants to study drugs like LSD, BZ, mushrooms, peyote, etc. The DoD also conducted their own experiments

One of the ironies of these paid government experimentations was that it "leaked." People like Leary became so enamored with the drug and the atmosphere of a collegiate environment (Berkeley, UCLA, Harvard, etc.), allowed the drugs to quickly get out of hand and out of the laboratory setting. Essentially many of the researchers and doctors being paid by the CIA and government were the first to start the psychedelics movement.

However, by the mid 1960's the CIA had lost interest in LSD, but not before it turned it lose on the world. There were some wild experiments such as dosing an elephant to death, dosing cats.

Some experiments were pretty nasty too. They experiemented on prisoners, and in one case kept 200 patients dosed on LSD for over 45 days. In some of those cases the doctors have been sued or been subject to censure. However, on the whole, many of these scientists and doctors simply went on with their work in pharmaceuticals and psychology.

In the end, over 1000 academic papers were written about psychoactives. However due to the widespread abuse of and criminalization of the drugs, halted experimentation by the mid 1960's. During this period though, people as varied as housewives to Carey Grant and Francis Crick (of DNA fame), experimented and used the drug. Due to the problematic nature of the drugs abuse a lot of information has been clouded and thorough, modern research has not been done until very recently. During it's brief period of testing, it was discovered that LSD combined with psychotherapy in a controlled environment with a trained facilitator had strong potential to aid treatment. There is also strong evidence that it is very useful in treating other substance abuse issues such as alcoholism, but of course this requires more study.

There is a great book about MKUltra and LSD called Acid Dreams which covers the history of LSD from it's discovery through the 1970's to include its use in MKUltra and the CIA, as well as a history of MKUltra's psychedelic experiments.