As the legal aspects of using the Sgt Pepper concept were unsettled, the album was released with the cover and back on the inside of the gatefold, while the actual cover and back were a picture of the group in a pose parodying the inside of the Beatles album. Miles 2004, p. 151 Miles, Barry (2004). Zappa. New York: Grove Press. ISBN9780802142153. OCLC852013692.
Semley, John (November 26, 2020). "How Weird Was Frank Zappa?". The New Republic. Retrieved June 26, 2023. It was also the year Zappa and his band, a blues-rock outfit called the Mothers of Invention
Walley 1980, p. 58. Walley, David (1980). No commercial potential : the saga of Frank Zappa, then and now. New York: E.P. Dutton. ISBN9780525931539. OCLC7067436.
Walley 1980, pp. 60–61. Walley, David (1980). No commercial potential : the saga of Frank Zappa, then and now. New York: E.P. Dutton. ISBN9780525931539. OCLC7067436.
Walley 1980, p. 90. Walley, David (1980). No commercial potential : the saga of Frank Zappa, then and now. New York: E.P. Dutton. ISBN9780525931539. OCLC7067436.
As the legal aspects of using the Sgt Pepper concept were unsettled, the album was released with the cover and back on the inside of the gatefold, while the actual cover and back were a picture of the group in a pose parodying the inside of the Beatles album. Miles 2004, p. 151 Miles, Barry (2004). Zappa. New York: Grove Press. ISBN9780802142153. OCLC852013692.
Walley 1980, p. 116. Walley, David (1980). No commercial potential : the saga of Frank Zappa, then and now. New York: E.P. Dutton. ISBN9780525931539. OCLC7067436.
Starks 1982, p. 153. Starks, Michael (1982). Cocaine Fiends and Reefer Madness : An Illustrated History of Drugs in the Movies. New York: Cornwall Books. ISBN9780845345047. OCLC7247337.