found: Sittin' in with Bob Shad, 1974
found: Wikipedia, May 16, 2017(Bob Shad; Robert "Bob" Shad; born Abraham Shadrinsky, February 12, 1920; died March 13, 1985, Beverly Hills, California; American record producer and record label owner; produced the first album by Big Brother and the Holding Company (featuring Janis Joplin); among his more successful labels were Time Records, Brent Records, and Mainstream Records)
found: Discogs, WWW site, May 16, 2017(Bob Shad; Robert "Bob" Shad; American music producer and record label owner (February 12, 1920-March 13, 1985); aliases: Robert Ellen, Robert Shad; in group: Bobby Shad and the Bad Men)
found: Oxford music online, May 18, 2017:New Grove dictionary of jazz, 2nd edition (Shad, Bob (Robert Abraham); born February 12, 1920, New York; died March 13, 1985, Los Angeles; American record producer and record company owner)
