Santa Monica 1950 - World's Largest Square Dance
Direct from Paramount, here is newsreel footage of the event. It conveys more powerfully than words what it looked like when 15,200 dancers filled the streets of Oceanside Boulevard on that July evening.
Bob Osgood was editor and publisher of Sets in Order magazine; he was also one of the major organizers of the Santa Monica square dance. This is his magazine's coverage of the event.
That's Lloyd Shaw on the cover of Let's Dance, the monthly publication of the Folk Dance Federation of California. This item is the magazine's coverage of the big event.
Here is the audio of Cal Golden calling the Arch of Three at the Santa Monica dance. The audio clip starts with Lloyd Shaw introducing the caller, then a sergeant in the U.S. Air Force and just about to head overseas to Korea. The complete audio from Santa Monica is also available.