The predecessor of the Folsom Street Fair was the "CMC Carnival" ("California Motorcycle Club Carnival"), a gay leather BDSM dance (with DJs and a rock band) and fair, with vendors and a back room for casual sex. It was held on the second Sunday of November every year from 1966 to the last one in 1986 at various indoor venues including most often at the Seafarer's International Union Hall (referred to as "Seaman's Hall" for short) at 350 Fremont Street in the Embarcadero area of SOMA. In the early 1970s, the CMC Carnival was attended by a few hundred people and by the time of the last large CMC Carnival in 1982 at what was then the Yellow Cab Building at Jones and Turk in the Tenderloin, it was attended by over 4,000 people.