On Saturday, May 29, 1971, a few thousand people walked into a big old ice-rink-turned-rock-hall in San Francisco called Winterland Arena. Tickets were about two dollars. The headliner was the Grateful Dead - a Bay Area band already famous for long jams and a crowd that liked to experiment. Also on the bill: the New Riders of the Purple Sage, R.J. Fox, and other acts. Roughly 4,500 people packed in for what should have been a normal Saturday night show.[1]
It was not a normal Saturday night show.
Before the punch
For the first part of the evening, it is just a concert. People find spots on the floor. The openers play. The Dead come on and start the night the way they often did then - with a rocker like Casey Jones and a long set that would eventually stretch into jams, drums, and songs that go on forever if you let them.[2]
Somewhere in the middle of all that, the night takes a left turn.
Someone brings the cans
According to people who were there and to the police story that hit the papers afterward, large containers of free drink get brought into the hall - described as two big plastic garbage cans, something like thirty gallons each, full of a liquid that looks and tastes like watered-down apple juice or cider.
One fan account says a VW van showed up out back, the cans came through a stage door, and helpers started filling cups and sending them into the crowd. Whether every detail of that van story is perfect is less important than the simple fact everybody agrees on: free liquid started moving through the room, hand to hand.[2]
Then somebody gets on the public-address system and basically turns the whole arena into a sharing circle.
An attendee named Alison McDonald later told reporters the announcement was along these lines: if you are going to get some liquid refreshment, pass it on so your neighbor can have some too. Other versions in the papers have someone saying there is water being passed out - take a sip and pass it back so everybody gets some.[1]
So people do what people do when a free drink shows up at a hot packed concert. They take a sip.
What was actually in the drink
The drink was not just apple juice.
It had been spiked with LSD - the powerful psychedelic drug also called acid. A normal street dose of LSD is measured in tiny amounts (micrograms). You cannot taste it in juice. That is why this works as a story and why it works as a mess: the cup tastes innocent, and the drug does not announce itself until it is already in your bloodstream.
Newspapers and wire services - UPI stories that ran in places like the Los Angeles Times and the Palo Alto Times - reported that about 1,000 people at the show drank the spiked cider. Not everyone in the building. Enough that the night stopped being "just a concert" for a huge slice of the floor.[1]
McDonald said she only sipped because she was thirsty. Weak apple juice, she thought. In less than an hour she knew it was more than that. "It was OK acid," she told reporters, "but I feel sorry for anyone who took more than two sips."
That is the kind of sentence that only makes sense after the night has already gone sideways.
Then the room tips over
LSD does not hit like a light switch for everyone at the exact same second, but once it starts, you cannot un-drink the cider. Across the floor, people who thought they were watching a band begin to trip - some lightly, some hard, some badly.
A ground-level write-up in the Berkeley Barb a couple weeks later describes the chaos without romance: people falling, people trying to stand and falling again, one person knocking into a whole row like dominoes, someone putting trash in their mouth, throwing up, trying to take clothes off, bodies on the floor "like dying fish."[1]
This is the part of the story that is not a joke. Plenty of people in that hall did not know they were taking LSD. They thought they were drinking free juice at a rock show. When a drug that strong arrives without warning, some people have a wild night and some people have a medical emergency.
Over the next few hours, nearby Mt. Zion Hospital treated more than thirty people for bad trips tied to the punch. Police and hospital spokespeople put that number in the papers. The official line was that people were not kept as long-term inpatients - they were treated and released after the worst of it - but thirty-plus bad trips in one night is still a full shift of mess for any ER.[1]
Winterland from the street (historical photo, 1985). Same building, later years - demolished not long after this was taken.
The band keeps playing
While all of that is happening on the floor, the Grateful Dead are still onstage doing what they do. Recordings of the night still circulate. The set moves through songs like Truckin', a long drum break into The Other One, Wharf Rat, Sugar Magnolia, and a late Not Fade Away stretch that fans still trade copies of.[2]
So you get this double reality under one roof: onstage, a normal (for them) 1971 Dead show; in the crowd, hundreds of people discovering they have been dosed, some of them headed for the hospital. Later, fans just call the whole night the Acid Punch Show - like it was a festival brand instead of a crime scene with a soundtrack.
After the lights come up
When people spill outside, the sidewalk stories get cartoonish. One memory that floats around is a naked guy on top of a car howling at the moon while San Francisco cops stand there laughing and waiting for him to come down. That is fan memory, not a police report - but it fits the picture of a night that left the building still weird.[2]
By Monday, the weirdness has turned into paperwork.
San Francisco police say they want to revoke Winterland's permit to put on concerts. Narcotics officers talk about the microphone announcement and the people who brought the cans. Police Chief Alfred Nelder frames halls like Winterland as a recurring problem, not a one-off accident.[1]
The promoter who ran the room, Bill Graham, holds a press conference and pushes back hard. He says he did not know about the PA announcement. He argues you do not close a venue because one night out of hundreds goes wrong - "Just because there's a train accident, you don't take the trains off the tracks."
Winterland is not shut down over the incident. Graham still sounds exhausted by the fight. The free cider has become a political weapon in the longer war over rock shows in San Francisco.
What the story actually is
Strip away the nickname and the legend-polishing, and May 29, 1971 is a simple chain of events:
A packed Grateful Dead concert at Winterland. Someone brings in large cans of apple-type drink laced with LSD. The PA encourages the crowd to sip and share. About a thousand people drink it without knowing - or without fully understanding - what is in it. The drug hits. The floor turns chaotic. More than thirty people need hospital help for bad trips. The band finishes the show. Police try to take the building's permit. Graham fights them. The hall survives. The night gets a permanent name.
That is the story. Funny in the setup. Ugly in the middle. Bureaucratic at the end. And still one of the clearest examples of why "pass it on" and "free juice" are not the same thing as a good idea.
Sources
- Grateful Dead Sources (Light Into Ashes). "May 29, 1971: Winterland." Compiles UPI / Los Angeles Times / Palo Alto Times / Berkeley Barb / Graham press-conference reporting. deadsources.blogspot.com
- Grateful Dead of the Day. "05-29-1971 - Winterland Arena, San Francisco." Show context, setlist notes, and fan accounts of the cans and aftermath. gratefuldeadoftheday.com
- Live for Live Music. "Remembering The Grateful Dead's Fateful 'Acid Punch Show'." Feature overview of the night and hospitalizations. liveforlivemusic.com
- Archive.org soundboard: gd1971-05-29 (Charlie Miller transfer lineage commonly cited for the night's tape). archive.org
Further rabbit holes
← Back to 🤯 psychedelics
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Leonard Pickard - flask accident
Related: how Winterland fit into Bill Graham's San Francisco empire, and why "free drink at a show" became a cautionary tale.