Nineteen-sixty-nine was a pivotal year in American culture. The hippies and the counterculture were ascendant, and everything that came before in entertainment was as square as can be. In cinema, there was the world before and after 1969’s “Easy Rider.” In music, the Woodstock Music and Arts Fair was a defining moment for the new era, and on television, the anti-establishment “Smothers Brothers Comedy Hour” divided households over its anti-war stance. In September of that year, Cros...