The Mothers of Invention
Frank Zappa – guitar, conductor, vocals
Jimmy Carl Black – drums, vocals
Ray Collins – vocals, tambourine, harmonica
Roy Estrada – bass, vocals
Billy Mundi – drums, percussion
Don Preston – keyboards
Jim Fielder – guitar, piano
Bunk Gardner – woodwinds

Additional musicians
Suzy Creamcheese (Lisa Cohen) – vocals on "Brown Shoes Don't Make It"
John Balkin – bass on "Invocation & Ritual Dance of the Young Pumpkin" and "America Drinks"
Jim Getzoff – violin on "Brown Shoes Don't Make It"
Marshall Sosson – violin on "Brown Shoes Don't Make It"
Alvin Dinkin – viola on "Brown Shoes Don't Make It"
Armand Kaproff – cello on "Brown Shoes Don't Make It"
Don Ellis – trumpet on "Brown Shoes Don't Make It"
John Rotella – contrabass clarinet on "Brown Shoes Don't Make It"
Herb Cohen – cash register machine sounds on "America Drinks & Goes Home"
Terry Gilliam, girlfriend and others – voices in "America Drinks & Goes Home"
(Jim Sherwood was credited as a member of The Mothers on the album's original release, but he actually joined the band during the recording of We're Only in It for the Money, and he isn't featured on this album.)

Production
Frank Zappa – producer, arranger, layout design, cover art, collage, liner notes
Tom Wilson – producer
Val Valentin – director of engineering
Ami Hadani – engineer
David Greene – remixing
Doug Sax – mastering
Ferenc Dobronyi – cover design
Cal Schenkel – cover design
Alice Ochs – cover photo, artwork
Jerry Deiter – photography