there's still a fair few CBS Quads either Sony Japan and/or Dutton Vocalion could do, including..
Elvis Presley (9),
Barbra Streisand (8),
Johnny Mathis (8),
Andy Williams (7),
Charley Pride (6),
Jose Feliciano (5),
Edgar Winter (4),
Johnny Winter (3),
Santana (3),
Bob Dylan (3),
Mountain (3),
Barry Manilow (3),
Dolly Parton/Porter Wagoner (3),
Dave Mason (3),
Isley Brothers (2),
Janis Ian (2),
Melissa Manchester (2),
Michael Nesmith (2),
Ray Stevens (2),
Charlie McCoy (2),
Jerry Reed (2),
Jefferson Airplane (2),
Blood Sweat & Tears (2),
Byrds "Byrdmaniax",
Billy Joel "Turnstiles",
Blue Öyster Cult "Tyranny & Mutation",
Janis Joplin "Pearl",
New Riders Of The Purple Sage "The Adventures Of Panama Red",
MFSB "Love Is The Message",
Buddy Miles "Chapter VII",
John Denver "Poems, Prayers & Promises",
Liza Minnelli "The Singer",
Lee Michaels "Nice Day For Something",
Michael Martin Murphey "Swans Against The Sun",
The Youngbloods "Best Of",
The Nite-Liters S/T,
David Clayton-Thomas S/T,
Stanley Turrentine "Don't Mess With Mister T.",
Ramsey Lewis Trio "Upendo Ni Pamoja",
Tanya Tucker's Greatest Hits,
Charlie Rich "Best Of",
Nina Simone "Best Of",
Stephen Michael Schwartz S/T,
Poco "Deliverin'",
Eric Carmen S/T,
Neil Diamond "Serenade",
Labelle "Phoenix",
Loggins & Messina "Native Sons",
Herbie Hancock "Secrets",
Brecker Brothers Band "Back To Back",
B.T. Express "Energy To Burn",
The Manhattans "It Feels So Good",
Maynard Ferguson "Conquistador",
Wild Cherry "Electrified Funk"...