Riders of Death (1944)
     aka Cottonwood Pards
The Man from Texas (1945)
Texas Talbert (1945) (writing as Lee Thomas)
Saddle Pals (1947)
Hangman's Range (1947)
Guns of Powder River (1947)
Texas Cowman (1947) (writing as Lee Thomas)
The Trail North (1950)
Dusty Boots (1950) (writing as Lee Thomas)
Double Cross Ranch (1950)
Riders in the Night (1950)
This Grass Is Mine (1950)
Black Gunsmoke (1951)
Deadly Draw (1951)
     aka Two-Gun Trail
Guns of Wyoming (1951)
Raiders of White Pine (1951) (writing as Lew Smith)
War On Alkali Creek (1951) (writing as Will Watson)
Wolf Dog Range (1951) (writing as Will Watson)
Milk River Range (1951)
Rimrock Renegades (1951)
Renegade Riders (1952)
Ambush Trail (1952)
Hell's Homestead (1953)
Sonora Stage (1953)
Wild Border Guns (1953)
     aka The Outlaw Breed
The Wyoming Rustlers (1953)
Four Texans north (1953)
Wolf Dog Town (1953) (writing as Lee Thomas)
Freight for the Little Snowies (1953)
Muddy Wheels (1953)
North to Wyoming (1953) (writing as Will Watson)
Rimrock Raiders (1953) (writing as Lew Smith)
Wind River Range (1953)
Rifles on the Rattlesnake (1954)
Smoky River (1954) (writing as Lew Smith)
Law of the West (1954)
Boothill Court (1954) (writing as Lew Smith)
Gambler's Guns (1954) (writing as Lee Thomas)
Powdersmoke Canyon (1954) (writing as Lew Smith)
Broken Horn (1954)
Pistol Partners (1954)
Trail's End (1954)
Winter Kill (1954) (writing as Len Turner)
Hammerhead Range (1955)
Texas Medico (1955) (writing as Len Turner)
Ramrod (1955) (writing as Lew Smith)
Wait for the Day (1955)
Trail to High Pine (1956)
Dusty Wheels (1957) (writing as Lew Smith)
Rifles On the Rimrock (1958)
     aka Rifle Law
Jill's Hollywood Assignment (1958)
Guns Along the Pecos (1959)
Winchester War (1960)
Renegade Gambler (1961)
Guns on Circle S (1962)
John Wesley Hardin, Texas Gunfighter (1962)
Montana Maverick (1962)
High Thunder (1962)
The Last Gun (1962)
The Last Freighter (1962)
Gunslammer (1963)
Two Guns North (1963)
Hollywood Nurse (1963)
Two Riders North (1963)
Deputy's Revenge (1964)
Mad River Guns (1965)
Black Boulder Ranch (1966)
The Tall Texan (1967)
Gun Luck (1968)
Fighting Ramrod (1968)
Rustler's Trail (1968)
Iron Hand (1969)
Riders in the Storm (1969)
The Bloodskinners (1970)
Gunsmoke Holiday (1970)
Bloody Rifles (1971)
Gambler With a Gun (1971)
Rangeland Feud (1973)
War Drum (1973) (writing as Maria Sandra Sterling)
Range War (1976)
Gun to Gun (1977)
The Gun Lords of Stirrup Basin (1977)
Shoot-out at Milk River (1977)
Gunpowder Mesa (1978)
Rifles on the Range (1978)
Gun Wolves of Lobo Basin (1978)
High Gun (1979)
Trail to Gunsmoke (1980)
The Rawhide Men (1980)
Callahan Rides Alone (1981)
Powdersmoke Lawyer (1981)
Broken Creek (1981)
High Border Riders (1981)
Broomtail Basin (1981)
Guns of Montana (1981)
Frontier Lawman (1981)
Buckskin Challenge (1983)
Cowthief Clanton (1983)
Boothill brand (1983) (writing as Will Watson)
North to Powder River (1983)
Renegade Rifles (1984)
Gun Quick (1984) (writing as Lew Smith)
West of the Barbwire (1985)
Burnt Wagon Ranch (1986)
Wyoming Gun Law (1986)
Lobo Valley (1986)
Bring Bullets, Texan! (1986)
The Bushwhackers (1986)
The Hard Riders (1987)
The Hell Raisers (1988)
Night Riders (1988)
Rope the Wild Wind (1988)
Renegade Rancher (1989)
Puma Pistoleers (1989)
Ride the Wild Country (1989)
The Long Trail North (1990)
Rough Country (1990)
Boot Hill Riders (1990)
Bonanza At Wishbone (1991)
Outlaw Bunch (1991)
Pinon Mesa (1991)
Rawhide (1991)
Springboard to Love (1991) (writing as Grace Lang)
Wyoming Showdown (1991)
Scattergun Grass (1992)
Love a Hostage (1993) (writing as Grace Lang)
The Smokestack Iron (1993) (writing as Lee Thomas)
Coyotes of Willow Brook (1994)

Swallowed By The Cracks (2011) (writing as Lee Thomas) (with S G Browne, Gary McMahon, Michael Marshall Smith)

Crowned Harp: Memories of the Last Years of the Crown in Ireland (1960)
The American Dream: A History of the United States (1977) (writing as Lew Smith)