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
Ferries of San Francisco Bay high speed ferryboats of this commuter system run between the Ferry Building in San Francisco and landings in Sausalito, Tiburon and Larkspur in Marin County. Other commuter ferries, all owned by the Water Emergency Transit Authority (WETA) under the name San Francisco Bay Ferry, run from the city of Alameda and Jack London Square in Oakland (formerly run by Oakland-Alameda Ferry), Bay Farm Island/Alameda (formerly run by Harbor Bay Ferry) and Vallejo to the Ferry Building in San Francisco (formerly run by Baylink Ferry). Tourist ferries run from pier 33 to Alcatraz Island, and from Fisherman's Wharf and Tiburon to