Quarantined documentary fans can get a rare glimpse at pre-Stonewall queer history next week, thanks to San Francisco’s Tenderloin Museum and Roxie Theatre, who are joining forces to present a digital screening of a rarely-seen film delving into the Tenderloin’s early queer movements during the ’60s and ’70s. “Gay San Francisco,” created by filmmaker Jonathan Raymond, gives an unabashedly raw window into queer life decades ago. “A true mondo film with no shortage of pornographic material,”