PHILIP JOSE FARMER Flesh (c.1960, 1968; 1981) and Lord Tyger (c.1970; 1981)
Published May 1981 (0-451-09787-4).
ROGER ZELAZNY Today We Choose Faces (c.1973; 1981) and Bridge of Ashes (c.1976; 1981)
POUL ANDERSON There Will Be Time (c.1972; 1982) and The Dancer From Atlantis (c.1971; 1982)
Published August 1982 (0-451- 11752-2).
JOHN JAKES Secrets of Stardeep (c.1969; 1982) and Timegate (c.1972; 1982)
Published September 1982 (0-451-11794-8).
POUL ANDERSON The Rebel Worlds and Knight of Ghosts and Shadows
Published November 1982 (0-451-11885-5).
LEWIS B. PATTEN Death Stalks Yellowhorse and The Orphans of Coyote Creek
LEWIS B. PATTEN Guilt of a Killer Town and Massacre Ridge (1977)
Split cover artwork. Note that this Signet Double is advertised as "Signet Brand Double Western."
RAY HOGAN The Rimrocker and The Outlawed (both c.1970; January 1978; 1st Signet printing)
NELSON NYE Maverick Marshall and BRAD WARD Thirty Notches (1978)
Split cover artwork. "Signet Brand Double Western" - in this case with two different authors.
WILL HICKOK Web of Gunsmoke (illustrated by Longaron) and JOHN S. DANIELS Ute Country (illustrated by Frank McCarthy; 1978)
JOHN REESE Rich Man's Range and PHIL KETCHUM Gun Code (1978)
Split cover artwork. "Signet Brand Double Western"
WILLIAM MacLEOD RAINE Powdersmoke Feud (original title: This Nettle Danger) and Clattering Hooves (February 1980)
LEWIS B. PATTEN A Killing In Kiowa and The Feud at Chimney Rock (1982)
Split cover artwork. Note that this Signet Double is not advertised as "Signet Brand Double Western" but has a listing for "2 Full Novels For Only $2.75."
RAY HOGAN Man Without A Gun (c.1983) and Conger's Woman (c.1963)
ERNEST HAYCOX Rim of the Desert (c.1940) and Dead Man Range (c.1930)
Published May 1980 (by New American Library, Inc.). Split cover artwork. "Signet Brand Double Western" Signet 451 - J9210
CLIFF FARRELL Patchsaddle Drive and Shoot Out At Sioux Wells (1980)Split cover artwork. "Signet Brand Double Western" Signet 451 - J9258
PEGGY GADDIS A Moonlight Meeting (c.1944; 1976) and REBECCA MARSH The Way of the Heart (1976)
ELIZABETH McCRAE A Well Furnished Life and A Sudden Darkness (1976)
Listed as "Signet Double Romance." Split cover artwork.
IVY VALDES Sheila's Dilemma and ELIZABETH McCRAE The Intrusion (1977)
ISBN (0-451-07440-8). Signet number W7440 (1st printing).
EMMA DARBY A Conflict of Women (c.1971) and Haven of Peace (1977)
VIVIAN DONALD Love on Location and The Happy Isle (January 1978; 1st Signet printing)
VIVIAN DONALD The Lady Ambassador and Love Royal (1978)
KRISTIN MICHAELS Enchanted Twilight and Song of the Heart (1980)
TERI LESTER Episode In Rome and IVY VALDES Sylvia's Daughter
TERI LESTER Tania and The Dawn of Love (original title: Island Mystery; 1977)
"Signet Double Romance." Split cover artwork. Signet E07804-7
PAMELA NICHOLS Escape To Romance and TERI LESTER Everything But Love
ALICE LENT COVERT The Alien Heart and PEGGY O'MORE Make Way For Spring
LYNN COOPER Her Heart's Desire and An Offer of Marriage (1980)
LYNN COOPER Substitute Bride and My Treasure, My Love (1981)
ELIZABETH SEIFERT The Two Faces of Dr. Collier and The Doctor's Reputation (1980)
Listed as "Signet Double Romance." In this case a "nurse-doctor romance."
MONICA HEATH Chateau of Shadows and The Legend of Crownpoint (1977)
Listed as "Signet Double Gothic" and "full length novels." ISBN 0-451-17754.
MONICA HEATH Clerycastle and Return to Clearycastle (1978)
Listed as "Signet Double Gothic" and "full length novels." ISBN 0-451-07981-7.
HEATHER SINCLAIR Follow The Heart and For The Love Of A Stranger
CAROLINE FARR Witch's Hammer and Granite Folly
Listed as "Signet Double Gothic" and "full length novels."
VIRGINIA COFFMAN Black Heather and Night At Sea Abbey
Listed as "Signet Double Gothic" and "full length novels." The Signet number is (451) J9468 (appears to mix the ISBN coding and their own numbering sequence).
MICKEY SPILLANE One Lonely Night and The Twisted Thing (c.1966; nd)
CARTER BROWN The Dream is Deadly and The Salvage Salome
CARTER BROWN The Blonde and Girl in a Shroud
CARTER BROWN The Lover and The Bombshell (1980)
CARTER BROWN (aka Alan GEOFFREY YATES) The Tigress and Angel (original title: Wildcat; 1981; 2nd printing)
ELLERY QUEEN Face to Face and The House of Brass
ELLERY QUEEN Wife or Death and The Golden Goose (June 1978)
ELLERY QUEEN The Last Score and Beware The Young Stranger (1978)
ELLERY QUEEN The Door Between and The Devil To Pay (1980)
ELLERY QUEEN The Dragon's Teeth and Calamity Town (1980)
ELLERY QUEEN Dead Man's Tale and Death Spins The Platter (1981)
ELLERY QUEEN The Copper Frame and A Room To Die In (c.1981; 1984)
ELLERY QUEEN Cop Out and The Last Woman In His Life (1982)
ELLERY QUEEN The Scarlet Letter and The Glass Village (April 1984)