San Francisco in the 1970s a disaster area. In the same year, with bankruptcy imminent for the San Francisco Ballet, a grassroots effort brought national attention to the association. Prior to the discovery of the first AIDS case in 1981, Dr. Selma Dritz, the city's medical epidemiologist, became alarmed at the increase in sexually transmitted diseases among the city's gay men, opining that epidemics had been triggered after 1974 by "political and social changes in the city". "The Grateful Dead Movie" was filmed in 1974 in San Francisco during the Grateful Dead's October 1974 five performances at the Winterland Ballroom. After the 1974 kidnapping of
San Francisco Bay arrived at a large arm of what is now called Drakes Bay. At the time, Drakes Bay went by the name "Bahia de San Francisco" and thus both bodies of water became associated with the name. Eventually, the larger, more important body of water fully appropriated the name "San Francisco Bay". The first European to enter the bay is believed to have been the Spanish explorer Juan de Ayala, who passed through the Golden Gate on August 5, 1775 in his ship the "San Carlos", and moored in a bay of Angel Island now known as Ayala Cove. Ayala continued