(1955) The Man with the Golden Arm

Strung-out junkie deals with daily demoralizing drug addiction while crippled wife and card sharks continue to pull him down.

(1950) The Marihuana Story (AKA Marihuana) (Spain / Argentina)

Pablo Urioste is a respected surgeon, but he is forced to experience a nightmarish world after his wife, a marijuana addict, dies at a nightclub. He tells his story to the police, and tells stories of how he is hooked, beaten, blackmailed, and includes some bad-trip flashbacks. Ms. Quiroga tries to help him, but there is little hope for Dr. Urioste after undergoing THE MARIHUANA STORY Source

(1958) The Cool and the Crazy

The Cool and the Crazy tells the story of Ben Saul, a reform school graduate who is transferred to a Kansas City high school. There, Ben's clowning in class ticks off the local gang of tough guys, but he soon wins all of their admiration when he begins buying them beer, taking them to dances, giving them "kicks," and then finally turning them on to marijuana. Ben is working as a frontman for a local marijuana ring, but the local police detective is hot on his trail. When a marijuna-crazed addict teenager whom Ben has sold the drug to, dies trying to hold up a filling station for drug money, the police question him and events begin to spiral out of Ben's control. In the dramatic (or melodramatic) finale, Ben ends up killing the pusher for more marijuana only to find that there is none, and gets his just deserts in a fiery car wreck. Then there is an obligatory moralizing segment, where a policeman screams at the surviving addicts, "Is this what you call 'kicks'?! Sooner or later, if you don't wise up you're all gonna wind up like this, one way or the other." Source

Teen exploitation film

(1955) Teenage Devil Dolls [full] Check out 7:00, Reefers!

Pert and pretty high school teen Cassandra Leigh opts for the easy life of a pot-smoking biker in order to avoid the demands of her neurotic career mom. When Cassandra's grades slip and her college plans fall by the wayside, she marries a love-smitten high school swain. The devotion of her husband bores the young bride: she looks up her old thrill-seeking buddies and splits from home.

It isn't long before she's peddling dope on the streets in order to finance her growing list of addictions. A young Mexican takes the wayward girl under his wing and makes her not only his partner-in-crime but his woman.

With the police on their heels, Cassandra and her lover are forced to ditch a stolen car in the desert and take refuge in a shallow cave. With the posse closing in, the Mexican abandons Cassandra and the deputies nab the semi-conscious heroine. The court sends Cassandra to a Federal Narcotics Hospital.Source

(1955) BBC - The Mescaline experiment: Humphry Osmond and Christopher Mayhew

Humphry Osmond was the British psychiatrist who coined the term "psychedelic". This short video documents an experiment in 1955 in which he administered mescaline to Christopher Mayhew, a member of parliament. Mayhew ingested 400mg of mescaline hydrochloride and recorded his experience on camera.
The footage was originally supposed to be broadcast on BBC.

Mayhew himself maintains that it was a genuine mystical experience which "took place outside time" and wanted it to be shown. However, an "expert" committee of psychiatrists, philosophers, and theologians reviewed the footage and reached a unanimous verdict that Mayhew's experience was not a valid mystical experience. So it was never broadcast.

(1958) Aldous Huxley interview

Aldous Leonard Huxley (26 July 1894 – 22 November 1963) was an English writer and one of the most prominent members of the famous Huxley family. Best known for his novels including Brave New World and a wide-ranging output of essays, Huxley also edited the magazine Oxford Poetry, and published short stories, poetry, travel writing, and film stories and scripts. Huxley spent the later part of his life in the United States, living in Los Angeles from 1937 until his death.

Aldous Huxley was a humanist, pacifist, and satirist, and he was latterly interested in spiritual subjects such as parapsychology and philosophical mysticism.[1][2] He is also well known for advocating and taking psychedelics.

By the end of his life Huxley was considered, in some academic circles, a leader of modern thought and an intellectual of the highest rank, and highly regarded as one of the most prominent explorers of visual communication and sight-related theories as well.[3]Source