List of Ace western double titles

Ace Books published 250 western Ace doubles between 1952 and 1973 in dos-à-dos format.

Genres and collectability

Ace published science fiction, mysteries, and westerns, as well as books not in any of these genres. Collectors of these genres have found the Ace doubles an attractive set of books to collect, because of the unusual appearance of the dos-à-dos format.

The list given here gives a date of publication; in all cases this refers to the date of publication by Ace, and not the date of original publication of the novels. For more information about the history of these titles, see Ace Books, which includes a discussion of the serial numbering conventions used and an explanation of the letter-code system.

D Series

* D-002 "WE" William Colt MacDonald "Bad Man's Return" / J. Edward Leithead "Bloody Hoofs" (1952)
* D-004 "WE" Lewis B. Patten "Massacre at White River" / Walter A. Tompkins "Rimrock Rider" (1952)
* D-006 "WE" William E. Vance "The Branded Lawman" / Nelson C. Nye "Plunder Valley" (1952)
* D-008 "WE" Allan K. Echols "Terror Rides the Range" / Tom West "Gunsmoke Gold" (1953)
* D-010 "WE" Leslie Scott "The Brazos Firebrand" / Gordon Young "Hell on Hoofs" (1953)
* D-012 "WE" Dudley Dean Mcgaughty (as Dean Owen) "The Man From Boot Hill" / Dan J. Stevens "Wild Horse Range" (1953)
* D-014 "WE" Paul Evan Lehman "Vultures On Horseback" / George Kilrain "Maverick With A Star" (1953)
* D-018 "WE" J. Edward Leithead "The Lead-Slingers " / Samuel Peeples (as Brad Ward) "The Hanging Hills" (1953)
* D-020 "WE" Roy Manning "The Desparado Code" / Allan K. Echols "Double-Cross Brand"
* D-022 "WE" Bliss Lomax "Maverick Of The Plains" / Leslie Scott "Badlands Masquerader" (1953)
* D-024 "WE" Tom West "Vulture Valley" / John Callahan "The Sidewinders" (1953)
* D-028 "WE" Paul Evans "Gunsmoke Kingdom" / William E. Vance "Avenger From Nowhere" (1953)
* D-030 "WE" George Kilrain "South To Santa Fe" / Samuel Peeples (as Brad Ward) "Johnny Sundance" (1953)
* D-034 "WE" Ken Murray "Hellion's Hole" / Ken Murray "Feud In Piney Flats" (1953)
* D-038 "WE" Bliss Lomax "Outlaw River" / Louis L'amour (as Jim Mayo) "Showdown At Yellow Butte"
* D-039 "WE" Frank Gruber "Quantrell's Raiders" / Frank Gruber "Rebel Road" (1953)
* D-042 "WE" Walter A. Tompkins "One Against The Bullet Horde" / Charles M. Martin "Law For Tombstone" (1954)
* D-046 "WE" Chuck Martin "Law From Back Beyond" / Roy Manning "Vengeance Valley" (1954)
* D-048 "WE" Louis L'Amour (as Jim Mayo) "Utah Blaine" / Samuel Peeples (as Brad Ward) "Desert Showdown" (1954)
* D-052 "WE" William Colt Macdonald "Boomtown Buccaneers" / Louis L'Amour "Crossfire Trail" (1954)
*D-056 "WE" Bliss Lomax "Ambush At Coffin Canyon" / Dwight Bennett Newton (as Clement Hardin) "Hellbent For A Hangrope' ' (1954)
*D-064 "WE" Paul Evan Lehman "Bullets Don't Bluff" / Chandler Whipple "Under The Mesa Rim" (1954)
*D-068 "WE" Walker A. Tompkins "Deadwood" / William Hopson "Bullet-Brand Empire" (1954)
*D-072 "WE" Ralph R. Perry "Night Rider Deputy" / Norman A. Fox "The Devil's Saddle" (1954)
*D-078 "WE" Nelson Nye "The One-Shot Kid" / Tom West "Lobo Legacy" (1954)
*D-086 "WE" Richard Brister "The Shoot-Out At Sentinel Peak" / Roy Manning "Tangled Trail" (1954)
*D-092 "WE" Burt Arthur "The Drifter" / Richard Wormser and Dan Gordon "The Longhorn Trail" (1955)
*D-098 "WE" Nelson Nye "Texas Tornado" / Samuel A. Peeples (as Samuel Anthony Peeples) "The Lobo Horseman" (1955)
*D-106 "WE" D.L. Bonar "Lawman Without A Badge" / Lee Floren "Four Texans North" (1955)
*D-112 "WE" Frank Castle "Border Buccaneers" / Harry Sinclair Drago "Trigger Gospel" (1955)
*D-120 "WE" John Mcgreevey "Bounty Man" / Samuel A. Peeples (as Samuel Anthony Peeples) "The Call Of The Gun"
*D-128 "WE" William Hopson "High Saddle" / William E. Vance "Way Station West" (1955)
*D-134 "WE" Gene Olsen "The Outsiders" / Nelson Nye "Tornado On Horseback" (1955)
*D-138 "WE" Paul Evan "Gunsmoke Over Sabado" / T.V. Olsen "Haven Of The Hunted" (1956)
*D-144 "WE" Jay Albert "The Man From Stony Lonesome" / Rod Patterson "A Killer Comes Riding" (1956)
*D-156 "WE" Lee Floren "Thruway West" / Stephen C. Lawrence "The Naked Range" (1956)
*D-160 "WE" Karl Kramer "Action Along The Humboldt" / Michael Carder "Decision At Sundown"
*D-166 "WE" Samuel A. Peeples (as Samuel Anthony Peeples) "Terror At Tres Alamos" / Stuart Brock "Whispering Canyon"
*D-172 "WE" Robert J. Steelman "Stages South" / Ben Smith "Johnny No-Name" (1956)
*D-180 "WE" Nelson C. Nye "The No-Gun Fighter" / Walt Coburn "One Step Ahead Of The Posse" (1956)
*D-186 "WE" Ray Hogan "Ex-Marshall" / Edward Churchill "Steel Horizon" (1956)
*D-192 "WE" Roy Manning "Beware Of This Tenderfoot" / John Callahan "Bad Blood At Black Range" (1956)
*D-196 "WE" Walt Coburn "The Night Branders" / Frank Gruber "The Highwayman"
*D-204 "WE" Paul Durst "John Law, Keep Out! " / Gordon Donalds "The Desperate Donigans" (1957)
*D-208 "WE" Glenn Balch "Blind Man's Bullets" / Barry Cord "The Prodigal Gun" (1957)
*D-216 "WE" Barry Cord "Savage Valley" / William Colt Macdonald "Ridin' Through" (1957)
*D-220 "WE" Ray Hogan "The Friendless One" / John Jakes "Wear A Fast Gun" (1956)
*D-226 "WE" Edwin Booth "Showdown At Warbird" / Samuel A. Peeples "Doc Colt" (1957)
*D-230 "WE" Barry Cord "Boss Of Barbed Wire" / Lee Floren "Burn 'Em Out! " (1957)
*D-236 "WE" Edwin Booth "Jinx Rider" / Ray Hogan "Walk A Lonely Trail" (1957)
*D-240 "WE" Wayne C. Lee "Broken Wheel Ranch" / Tom West "Torture Trail" (1957)
*D-248 "WE" Dwight Bennett Newton (as Clement Hardin) "Longhorn Law" / Ray Hogan "Cross Me In Gunsmoke" (1957)
*D-252 "WE" John Callahan "The Rawhide Breed" / Rod Patterson "Prairie Terror" (1957)
*D-260 "WE" Ray Hogan and Matt Slade "Land Of The Strangers" / Lee Floren "The Saddle Wolves" (1957)
*D-264 "WE" Barry Cord "Cain Basin" / Lee E. Wells "Brother Outlaw" (1958)
*D-272 "WE" Lee Floren "Riders In The Night" / William Hopson "Backlash At Cajon Pass"
*D-276 "WE" Barry Cord "The Gunsmoke Trail" / Tom West "Lead In His Fists" (1958)
*D-284 "WE" Barry Cord "The Guns Of Hammer" / Edwin Booth "The Man Who Killed Tex" (1958)
*D-288 "WE" Edwin Booth "Trail To Tomahawk" / John Callhan "Land Beyond The Law"
*D-294 "WE" John H. Latham "Bad Bunch Of The Brasada" / Walt Coburn "Beyond The Wide Missouri" (1958)
*D-298 "WE" Paul Evans "Thunder Creek Range" / William Vance "Outlaws Welcome! " (1958)
*D-304 "WE" Archie Joscelyn "River To The Sunset" / Ben Smith "Trouble At Breakdam" (1958)
*D-308 "WE" Jack M. Bickham "Gunman's Gamble" / Roy Manning "Draw And Die! " (1958)
*D-316 "WE" Rod Patterson "A Time For Guns" / Barry Cord" / Mesquite Johnny" (1958)
*D-320 "WE" Robert Mccaig "The Rangemaster" / William Hopson "The Last Shoot-Out" (1958)
*D-328 "WE" Merle Constiner "The Fourth Gunman" / Tom West "Slick On The Draw" (1958)
*D-332 "WE" Kermit Welles "Blood On Boot Hill" / Ben Smith "Stranger In Sundown" (1959)
*D-346 "WE" Ray Hogan "Wanted: Alive! " / Barry Cord "Sherriff Of Big Hat" (1957)
*D-348 "WE" T.V. Olsen "The Man From Nowhere" / John L. Shelley "The Avenging Gun" (1959)
*D-356 "WE" Paul Durst "Kansas Guns" / Tom West "The Cactus Kid" (1958)
*D-360 "WE" John H. Latham "Johnny Sixgun" / Barry Cord "War In Peaceful Valley" (1959)
*D-368 "WE" Ray Hogan "Hangman's Valley" / Joseph Gage "A Score To Settle" (1959)
*D-372 "WE" Dan Kirby "Cimarron Territory" / Glenn Balach "Grass Greed" (1959)
*D-380 "WE" William Heuman "My Brother The Gunman" / Barry Cord "Concho Valley" (1959)
*D-384 "WE" Louis Trimble "Mountain Ambush" / Jack M. Bickham "Feud Fury"
*D-392 "WE" Tom West "Twisted Trail" / Archie Joscelyn "The Man From Salt Creek" (1959)
*D-400 "WE" Barry Cord "Last Chance At Devil's Canyon" / Gordon D. Shirreffs "Shadow Of A Gunman" (1959)
*D-408 "WE" Edwin Booth "Wyoming Welcome" / Giles A. Lutz "Law Of The Trigger" (1959)
*D-412 "WE" E.A. Alman "Ride The Long Night" / Gordon D. Shirreffs "Apache Butte" (1959)
*D-418 "WE" C.S. Park "The Quiet Ones" / Tom West "Nothing But My Gun" (1960)
*D-424 "WE" Lee Richards "Shoot Out At The Way Station" / Robert Mccaig "Wild Justice" (1960)
*D-430 "WE" William Hopson "Born Savage" / Ray Hogan "The Hasty Hangman" (1960)
*D-436 "WE" Tom West "The Phantom Pistoleer" / Giles A. Lutz "The Challenger" (1960)
*D-442 "WE" Jack M. Bickham "Killer's Paradise" / Rod Patterson "Rider Of The Rincon" (1960)
*D-448 "WE" Lee Floren "Pistol-Whipper" / Archie Joscelyn (as Al Cody) "Winter Range (1960)
*D-450 "WE" Tom West "Side Me With Sixes" / Ray Hogan "The Ridgerunner" (1960)
*D-456 "WE" Edwin Booth "Danger Trail" / Edwin Booth "The Desperate Dude"
*D-462 "WE" Jack M. Bickham "The Useless Gun" / John H. Latham "The Long Fuse" (1960)
*D-470 "WE" Gene Olsen "The Man Who Was Morgan" / Ben Smith "The Maverick" (1960)]
*D-476 "WE" Tom West "Double Cross Dinero" / Edwin Booth "Last Valley" (1960)
*D-484 "WE" Ray Hogan "Ambush At Riflestock" / Archie Joscelyn (as Al Cody) "Dead Man's Spurs" (1961)
*D-492 "WE" William Hopson "Winter Drive" / Giles A. Lutz "The Wild Quarry" (1961)
*D-496 "WE" Steven G. Lawrence "With Blood In Their Eyes" / Tom West "Killer's Canyon" (1961)
*D-502 "WE" Paul Evan Lehman "Troubled Range" / Archie Joscelyn (as Al Cody) "Long Night At Lodgepole" (1961)
*D-510 "WE" Harry Whittington "The Searching Rider" / Jack M. Bickham "Hangman's Territory" (1961)
*D-514 "WE" Gordon D. Shirreffs "Hangin' Pards" / Gordon D. Shirreffs "Ride A Lone Trail" (1961)

F Series

*F-103 "WE" Harry Whittington "A Trap For Sam Dodge" / Lee Floren "High Thunder" (1961)
*F-106 "WE" Brian Garfield "Justice At Spanish Flat" / Tom West "The Gun From Nowhere" (1961)
*F-110 "WE" Ray Hogan "Track The Man Down" / Lee Wells "Savage Range" (1961)
*F-116 "WE" Dwight Bennett Newton (as Clement Hardin) "The Lurking Gun" / Louis Trimble "Deadman Canyon" (1961)
*F-120 "WE" Jack M. Brickham "Gunman Can't Hide" / John Callahan "Come In Shooting" (1961)
*F-124 "WE" Steven G. Lawrence "Slatterly" / Steven G. Lawrence "Bullet Welcome For Slatterly" (1961)
*F-126 "WE" Edwin Booth "The Troublemaker" / Ray Hogan "A Marshall For Lawless" (1962)
*F-128 "WE" Tom West "The Buzzard's Nest" / Louis Trimble "Siege At High Meadow" (1962)
*F-134 "WE" Rod Patterson "A Shooting At Sundust" / Gordon D. Shirreffs "Tumbleweed Trigger" (1962)
*F-138 "WE" Steven G. Lawrence "Walk A Narrow Trail" / Steven G. Lawrence "A Noose For Slattery" (1962)
*F-142 "WE" L. P. Holmes "Wolf Brand" / "Smoky Pass" (1962)
*F-144 "WE" Brian Garfield (as Frank Wynne) "Massacre Basin" / Dwight Bennett Newton (as Clement Hardin) "The Badge Shooters" (1962)
*F-148 "WE" Harry Whittington "Wild Sky" / Tom West "Dead Man's Double Cross" (1962)
*F-150 "WE" Nelson Nye "Hideout Mountain" / "Rafe" (1962)
*F-152 "WE" Gordon D. Shirreffs "Rio Desperado’’ //"Voice Of The Gun" (1962)
*F-160 "WE" Ray Hogan "New Gun For Kingdom City" / "The Shotgunner" (1962)
*F-164 "WE" Steven G. Lawrence "Longhorns North" / "Slattery's Gun Says "No" (1962)
*F-172 "WE" Tom West "Battling Buckeroos" / Giles A. Lutz "Gun Rich" (1962)
*F-176 "WE" Dan J. Stevens "Gun Trap At Bright Water" / Ray Hogan "The Outside Gun" (1963)
*F-184 "WE" Nelson C. Nye "Death Valley Slim" / "The Kid From Lincoln County" (1963)
*F-186 "WE" William O. Turner "The High Hander" / Louis Trimble "Wild Horse Range" (1963) (may be misprinted as F-185 on some copies)
*F-196 "WE" Harry Whittington "Dry Gulch Town" / "Prairie Raiders" (1963)
*F-200 "WE" Tom West "Triggering Texan" / Brian Garfield (as Frank Wynne) "The Big Snow" (1963)
*F-208 "WE" L. P. Holmes "Side Me At Sundown" / "The Buzzards Of Rocky Pass"
*F-214 "WE" Louis Trimble "The Man From Colorado" / Bill Burchardt "The Wildcatters" (1963)
*F-224 "WE" Nelson Nye "Bancroft's Banco" / "The Seven Six-Gunners" (1963)
*F-230 "WE" Tom West "Lobo Lawman" / Ray Hogan "Trail Of The Fresno Kid" (1963)
*F-238 "WE" Stephen Payne "Brand Him Outlaw" / Gordon D. Shirreffs "Quicktrigger" (1963)
*F-244 "WE" Ray Hogan "Last Gun At Cabresto" / Edwin Booth "Valley Of Violence" (1962)
*F-250 "WE" Barry Cord "The Masked Gun" / Tom West "Gallows Gulch" (1963)
*F-254 "WE" Philip Ketchum "The Ghost Riders" / William Heuman "Hardcase Halloran" (1964)
*F-260 "WE" Louis Trimble "Trouble At Gunsight" / Brian Garfield "Trail Drive"
*F-264 "WE" Ben Elliott "Contract In Cartridges" / Tom West "Don't Cross My Line" (1964)
*F-272 "WE" Ray Hogan "The Man From Barranca Negra" / Stephen Payne "No Job For A Cowboy" (1964)
*F-276 "WE" Brian Garfield (as Brian Wynne) "Mr. Six Gun" / William E. Vance "The Wolf Slayer" (1964)
*F-284 "WE" Lin Searles "Border Passage" / Ben Smith "The Homesteader" (1964)
*F-292 "WE" Gordon D. Shirreffs "The Hidden Rider Of Dark Mountain" / Tom West "The Man At Rope's End" (1964)
*F-298 "WE" Nelson Nye "Treaure Trail From Tucson" / "Sudden Country" (1964)

M Series

*M-100 "WE" John Callahan "A Man Named Raglan" / Barry Cord "Gun Junction" (1964)
*M-102 "WE" Ray Hogan "Hoodoo Guns" / Rod Patterson "Trouble At Hangdog Flats" (1964)
*M-104 "WE" Tom West "Sidewinder Showdown" / Dan J. Stevens "Land Beyond The Law"
*M-106 "WE" Reese Sullivan "The Blind Trail" / Tim Kelly "Ride Of Fury" (1964)
*M-108 "WE" Rod Patterson "Gunfire Heritage" / Wayne C. Lee "Warpath West" (1965)
*M-110 "WE" Tom West "Bushwack Brand" / Merle Constiner "Wolf On Horseback" (1965)
*M-112 "WE" Nelson Nye "Rogue's Rendezvous" / "Gun Feud At Tiedown"
*M-114 "WE" Brian Garfield (as Frank Wynne) "Lynch Law Canyon" / Stephen Payne "Stampede On Farway Pass"
*M-118 "WE" Merle Constiner "Guns At Q Cross" / Tom West "The Toughest Town In The Territory" (1965)
*M-120 "WE" Nelson Nye "Ambush At Yuma's Chimney" / John Callahan "Ride The Wild Land" (1965)
*M-122 "WE" Roger G. Spellman "Tall For A Texan" / William Vance "Outlaw Brand" (1965)
*M-124 "WE" Stephen Payne "Trail Of The Vanishing Ranchers" / Tom West "Battle At Rattlesnake Pass" (1965)
*M-126 "WE" Harry Whittington "Valley Of Savage Men" / Ben Elliott "Brother Badman" (1965)
*M-128 "WE" Brian Garfield (as Brian Wynne) "The Night It Rained Bullets" / Reese Sullivan "Nemesis Of Circle A" (1965)
*M-130 "WE" John Callahan "Half-Injun, Half-Wildcat" / Clement Hardin "Outcast Of Ute Bend" (1965)
*M-134 "WE" Tom West "Lost Loot Of Kittycat Ranch" / Lin Searles "Saddle The Wind" (1965)
*M-136 "WE" Ray Hogan "Panhandle Pistolero" / Nelson Nye "The Marshall Of Pioche" (1966)
*M-138 "WE" Brian Garfield (as Frank Wynne) "Call Me Hazard" / Dean Owens "The Rincon Trap" (1966)
*M-140 "WE" Reese Sullivan "Deadly Like A .45" / Barry Cord "Last Stage To Gomorrah" (1966)

G Series

*G-573 "WE" Tom West "Rattlesnake Range" / Merle Constiner "Top Gun From The Dakotas" (1966)
*G-577 "WE" Roger Spellman "Big Man From The Brazos" / Ray Hogan "Killer's Gun" (1966)
*G-579 "WE" Lee E. Wells "Ride A Dim Trail" / Louis Trimble "Showdown In The Cayuse" (1966)
*G-584 "WE" William E. Vance "Son Of A Desparado" / Dwight Bennett Newton (as Clement Hardin) "The Ruthless Breed" (1966)
*G-587 "WE" Lee Hoffman "Gunfight At Laramie" / Brian Garfield (as Frank Wynne) "The Wolf Pack
*G-591 "WE" Dan J. Stevens "Stage To Durango" / Tom West "Hangrope Heritage" (1966)
*G-596 "WE" Reese Sullivan "The Demanding Land" / John Callahan "Hackett's Feud" (1966)
*G-601 "WE" John L. Shelley "The Return Of Bullet Benton" / Ray Hogan "The Hellsfire Lawman" (1966)
*G-607 "WE" Merle Constiner "Rain Of Fire" / Tom West "Bitter Brand" (1966)
*G-610 "WE" John L. Shelley "The Siege At Gunhammer" / Frank Wynee "The Lusty Breed" (1967)
*G-615 "WE" Ray Hogan "Legacy Of The Slash M" / William Vance "Tracker" (1967)
*G-619 "WE" Barry Cord "Gallows Ghost" / Stephen Payne "Room To Swing A Loop"
*G-622 "WE" Tom West "Showdown At Serano" / Dwight Bennett Newton (as Clement Hardin) "The Paxman Feud" (1967)
*G-633 "WE" Wayne C. Lee "Return To Gunpoint" / Dan J. Stevens "The Killers From Owl Creek"
*G-638 "WE" Edwin Booth "A Time To Shoot" / Merle Constiner "The Action At Redstone Creek"
*G-642 "WE" Louis Trimble "Standoff At Massacre Buttes" / Kyle Hollingshead "Echo Of A Texas Rifle" (1967)
*G-648 "WE" William Vance "The Raid At Crazyhorse" / Tom West "Crossfire At Barbed M" (1967)
*G-659 "WE" Dwight Bennett Newton (as Clement Hardin) "The Oxbow Deed" / John Callahan "Kincaid" (1967)
*G-668 "WE" Brian Garfield (as Brian Wynne) "A Badge For A Badman" / Ray Hogan "Devil's Butte" (1967)
*G-674 "WE" William Vance "No Man's Brand" / Merle Constiner "Two Pistols South Of Deadwood" (1967)
*G-682 "WE" John Callahan "Ride For Vengeance" / Tom West "Bandit Brand"
*G-687 "WE" Dan J. Stevens "Stranger In Rampart" / Eric Allen "The Hanging At Whiskey Smith"
*G-698 "WE" Ray Hogan "Trouble At Tenkiller" / Kyle Hollingshead "The Franklin Raid" (1968)
*G-705 "WE" Barry Cord "The Long Wire" / Merle Constiner "Killers' Corral" (1968)
*G-710 "WE" Tom West "The Face Behind The Mask" / Louis Trimble "Marshall Of Sangaree" (1968)
*G-721 "WE" Don P. Jenison "The Silver Concho" / Lee Hoffman "Dead Man's Gold" (1968)
*G-727 "WE" John Callahan "Tracks Of The Hunter" / Clay Ringold "Return To Rio Fuego" (1968)
*G-732 "WE" Reese Sullivan "The Trouble Borrower" / Dwight Bennett Newton (as Clement Hardin) "Ambush Reckoning" (1968)
*G-742 "WE" Tom West "Write His Name In Gunsmoke" / Dean Owens "Lone Star Roundup" (1968)
*G-747 "WE" Ray Hogan "Killer On The Warbucket" / Dean Owen "Sage Tower" (1968)
*G-755 "WE" Wayne C. Lee "Trail Of The Skulls" / Merle Constiner "The Four From Gila Bend" (1968)
*G-760 "WE" Reese Sullivan "The Vengeance Ghost" / X.X. Jones "Bronc" (1968)
*G-764 "WE" Louis Trimble "West To The Pecos" / John Callahan Jernigan "Jernigan" (1968)

Numbered Series

*04612 "WE" Tom West "Bad Blood At Bonita Basin" / Tom West "Rattlesnake Range" (1972)
*06760 "WE" C. Hall Thompson "The Killing Of Hallie James" / Ray Hogan "The Bloodrock Valley War" (1969)
*08560 "WE" Louis Trimble "Siege At High Meadow" / Tom West "The Buzzard's Nest" (1973)
*09135 "WE" Clay Ringold "The Hooded Gun" / Sam Bowie "Canyon War" (1969)
*10665 "WE" Giles A. Lutz "The Challenger" / Tom West "The Phantom Pistoleer" (1960)
*11530 "WE" Louis Trimble "The Lonesome Mountains" / Dwight Bennett Newton (as Clement Hardin) "Colt Wages" (1970)
*11738 "WE" Dan J. Stevens "Hunter's Moon" / Tom West "Corral This Killer" (1973)
*11785 "WE" Phillip Ketchum "The Cougar Basin War" / Louis Trimble "Trouble Valley"
*14193 "WE" Nelson Nye "Death Valley Slim" /"The Kid From Lincoln County"
*14195 "WE" Kyle Hollingshead "Ransome's Debt" / Merle Constiner "Death Waits At Dakins Station" (1970)
*14265 "WE" Norman Daniels "The Plunderers" / Tom West "Desperado Doublecross" (1970)
*17000 "WE" Reese Sullivan "The Deadly Deputy" / Dan J. Stevens "The Dry Fork Incident" (1969)
*17235 "WE" Don P. Jenison "South To New Range" / Clay Ringold "Duel In Lagrima Valley" (1970)
*24925 "WE" Merle Constiner "The Fourth Gunman" / Tom West "Slick On The Draw"
*27251 "WE" Barry Cord "Gallows Ghost" / "The Long Wire" (1967)
*27376 "WE" Tom West "Gallows Gulch" / "The Man At Rope's End" (1964)
*30701 "WE" Nelson Nye "Rogue's Rendezvous" / "Gun Feud At Tiedown" (1965)
*30850 "WE" Tom West "Black Buzzards Of Bueno" / Ben Smith "The Guns Of Sonora" (1969)
*31739 "WE" Edwin Booth "Hardesty" / Reese Sullivan "The Stranger" (1972)
*32718 "WE" Barry Cord "Hell In Paradise Valley" / Clay Ringold "The Night Hell's Corners Died"
*33460 "WE" Louis Trimble "Wild Horse Range" / William O. Turner "The High Hander" (1963)
*38500 "WE" Kyle Hollingshead "Ransome's Move" / L. L. Foreman "Jemez Brand" (1971)
*47200 "WE" L. L. Foreman "Last Stand Mesa" / Phillip Ketchum "Mad Morgan's Hoard" (1969)
*48755 "WE" Tom West "Lobo Of Lynx Valley" / Louis Trimble "The Ragbag Army" (1971)
*48885 "WE" Brian Garfield (as Brian Wynne) "Gunslick Territory" / John Callahan "Loner With A Gun" (1973)
*49301 "WE" Lin Searles "Saddle In The Wind" / Tom West "Lost Loot Of Kittycat Ranch" (1965)
*52035 "WE" Eric Allen Marshall "From Whiskey Smith" / Gene Tuttle "Imposters In Mesquite"
*53540 "WE" William E. Vance "The Wolf Slayer" / Brian Garfield (as Brian Wynne) "Mr. Sixgun" (1954)
*57140 "WE" Ray Hogan "New Gun For Kingdom City" / "The Shotgunner"
*57601 "WE" Reese Sullivan "Nemesis Of Circle A" / Brian Garfield (as Brian Wynne) "The Night It Rained Bullets" (1965)
*58601 "WE" Merle Constiner "Two Pistols South Of Deadwood" / William Vance "No Man's Brand"
*60990 "WE" Reese Sullivan "Man On The Run" / John Callahan "Odds Against The Texan" (1971)
*67580 "WE" Ray Hogan "The Vengeance Gun" / L. L. Foreman "Powdersmoke Partners" (1973)
*70350 "WE" Nelson Nye "Hideout Mountain" / "Rafe" (1962)
*71372 "WE" Louis Trimble "The Hostile Peaks" / Tom West "Renegade Roundup" (1969)
*72260 "WE" Gordon D. Shirreffs "Quicktrigger" / "Rio Desperado"
*72360 "WE" John Callahan "Ride The Wild Land" / "Jernigan" (1965)
*72525 "WE" Brian Garfield (as Frank Wynne) "Call Me Hazard" / Dean Owen "The Rincon Trap" (1966)
*74180 "WE" Barry Cord "Desert Knights" / "The Running Iron Samaritans" (1973)
*75150 "WE" Ray Hogan "Track The Man Down" / Lee. E. Wells "Savage Range" (1965)
*75520 "WE" Tom West "Scorpion Showdown" / Clay Ringold "Reckoning In Fire Valley" (1969)
*75968 "WE" Nelson Nye "Bancroft's Banco" / "The Seven Six-Gunners" (1963)
*76900 "WE" Dean Owens "The Skull Riders" / Merle Constiner "The Man Who Shot "The Kid" (1969)
*77520 "WE" Barry Cord "Gun Boss of Triangle" / Wayne C. Lee "Son of a Gunman" (1973)
*77910 "WE" Dwight Bennett Newton (as Clement Hardin) "Stage Line To Rincon" / Ray Hogan "A Man Called Ryker" (1971)
*77925 "WE" Stephen Payne "Stampede On Farway Pass" / Brian Garfield (as Frank Wynne) "Lynch Law Canyon" (1965)
*79117 "WE" Tom West "Sweetgrass Valley Showdown" / Owen Gun "Country" (1971)
*79601 "WE" Roger Spellman "Tall For A Texan" / "Big Man From The Brazos" (1965)
*81861 "WE" Merle Constiner "Guns At Q Cross" / Tom West "The Toughest Town In The Territory"
*82101 "WE" Brian Garfield "Trail Drive" / Louis Trimble "Trouble At Gunsight" (1964)
*82190 "WE" Harry Whittington "A Trap For Sam Dodge" / "Valley Of Savage Men" (1965)
*82435 "WE" Barry Cord "The Coffin Fillers" / Don T. Jenison "Trouble On Diamond Seven" (1972)
*83360 "WE" Barry Cord "Two Graves For A Lawman" / "The Deadly Amigos"
*86465 "WE" Don P. Jenison "Zero Hour At Black Butte" / Dwight Bennett Newton (as Clement Hardin) "Sherriff Of Sentinel" (1969)
*89590 "WE" L. P. Holmes "Smoky Pass" / L. P. Holmes "Wolf Brand" (1962)

References

* [http://people.uncw.edu/smithms/ACE.html Ace Image Library] . Contains images of most covers for the doubles in all genres, as well as many of the single titles.
* [http://www.bookscans.com/ Bookscans] . Contains numerous images of the Ace covers.