Grateful Dead Productions , Carlos Santana , right , and members of Led Zeppelin and the Doors filed suit in United States District Court in San Francisco against William Sagan , owner of Wolfgang 's Vault , which offers thousands of recordings of rare audio and video music performances collected over 30 years by Bill Graham , a concert promoter who died in 1991 .
Bill Graham
San Francisco
/people/person/place_lived
PERSON
Carlos Santana
ORGANIZATION
Zeppelin
LOCATION
San Francisco
PERSON
Bill Graham