Of the rock festivals of the sixties, the Woodstock Music and Art Fair was by far the most famous. Held on a 600-acre dairy farm near Bethel, N.Y. on August 15–17, 1969, the festival is the iconic representation of the drug-addled culture and sexual revolution that upended American life. This August marks the fiftieth anniversary of the era-defining event. Some have called for celebrating with another concert. The occasion is hardly a cause for celebration—so many of the cultural changes after Woodstock had catastrophic consequences. Most do not know that the concert was a disaster—even from an organizational point of...