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| Title | Year | Status | Character |
|---|
| The Blue and the Gray | 1982 | TV Mini-Series | Bull Run Colonel |
| Early Warning | 1981 | Sgt. Scott O'Malley |
| Scream | 1981 | Ross |
| The Man with Bogart's Face | 1980 | Sgt. Hacksaw |
| Beggarman, Thief | 1979 | TV Movie |
| Hot Lead and Cold Feet | 1978 | Jeff |
| True Grit: A Further Adventure | 1978 | TV Movie | Slatter |
| Go West, Young Girl | 1978 | TV Movie | Payne (as Greg Palmer) |
| How the West Was Won | 1978 | TV Series | Loman |
| CHiPs | 1978 | TV Series | Walter |
| The Hostage Heart | 1977 | TV Movie | Walker Bench (as Greg Palmer) |
| Quincy M.E. | 1977 | TV Series | Sean Duffy |
| Walt Disney's Wonderful World of Color | 1959-1977 | TV Series | Jim Bridger / Posse Bushwhacker / Ed's Friend |
| Kit Carson and the Mountain Men | 1977 | TV Movie | Jim Bridger |
| The Shootist | 1976 | Burly Man |
| The New Daughters of Joshua Cabe | 1976 | TV Movie |
| The World Through the Eyes of Children | 1975 | Blacksmith |
| Gunsmoke | 1958-1975 | TV Series | Simeon Reed / Guthrie / Nicols / ... |
| Kolchak: The Night Stalker | 1975 | TV Series | Sgt. Buxbaum |
| Here We Go Again, Eh Providence? | 1973 | The Hurricane Kid |
| Swiebertje | 1973 | TV Series | Filibert Deuterhops |
| Life Is Tough, Eh Providence? | 1972 | Hurricane 'Kid' Smith |
| Nichols | 1972 | TV Series | Burt |
| Kung Fu | 1972 | TV Series | Henchman Guarding Caine |
| Alias Smith and Jones | 1972 | TV Series | Fermin |
| Mongo's Back in Town | 1971 | TV Movie | Szabo |
| Jason King | 1971 | TV Series | Swiss Policeman |
| Cannon | 1971 | TV Series | Gunther |
| Big Jake | 1971 | John Goodfellow |
| The Virginian | 1964-1970 | TV Series | O'Shea / Boak / Sheriff / ... |
| Rio Lobo | 1970 | Pete - Henchman (uncredited) |
| The McKenzie Break | 1970 | Lt. Berger |
| Chisum | 1970 | Karl Riker |
| Menace on the Mountain | 1970 | TV Movie | Posse bushwhacker |
| Cutter's Trail | 1970 | TV Movie | Oakes |
| Death Valley Days | 1956-1969 | TV Series | Orrin Porter Rockwell / Jacob Hamblin / Leach / ... |
| The Undefeated | 1969 | Parker |
| Bonanza | 1964-1969 | TV Series | Benson / Terrell / Muley / ... |
| Smith! | 1969 | Sergeant, Court Bailiff (uncredited) |
| The Good Guys | 1969 | TV Series | Maurice |
| Star Trek | 1968 | TV Series | Rancher |
| The Wild Wild West | 1965-1968 | TV Series | Bartender / Sheriff Jonas Bolt / Thaddeus |
| If He Hollers, Let Him Go! | 1968 | Special Officer |
| Cimarron Strip | 1967-1968 | TV Series | Webber / Buford / Rocky |
| Mission: Impossible | 1968 | TV Series | Deputy |
| The High Chaparral | 1968 | TV Series | Colonel Bell |
| Tarzan | 1967-1968 | TV Series | Haines / German in Dream / Cookie |
| Gomer Pyle: USMC | 1967 | TV Series | Second Agent |
| Run for Your Life | 1965-1967 | TV Series | Highway Patrolman / The Big Man / Deputy Morgan |
| Laredo | 1965-1966 | TV Series | Sgt, Mason / Curly |
| Run Buddy Run | 1966 | TV Series | Harry |
| The Long, Hot Summer | 1966 | TV Series | Grant Johnson |
| Get Smart | 1966 | TV Series | KAOS Agent / The Texan |
| The Rare Breed | 1966 | Rodenbush |
| The Legend of Jesse James | 1966 | TV Series | Moose Walters |
| Branded | 1965 | TV Series | Doc |
| The Big Valley | 1965 | TV Series | Mel Coombs |
| A Man Called Shenandoah | 1965 | TV Series | Corey |
| The Loner | 1965 | TV Series | Adjutant |
| Shenandoah | 1965 | Guard (uncredited) |
| The Littlest Hobo | 1963-1965 | TV Series | Vern / Tom Dawson |
| Rawhide | 1965 | TV Series | Mace |
| Daniel Boone | 1965 | TV Series | Trapper |
| Advance to the Rear | 1964 | Gambler (uncredited) |
| The Quick Gun | 1964 | Donovan |
| The Lieutenant | 1964 | TV Series | Pvt. Carey Booth |
| The Prize | 1963 | Swedish Commentator (uncredited) |
| Temple Houston | 1963 | TV Series |
| 77 Sunset Strip | 1962-1963 | TV Series | Gruniger / Murph Brady / Donovan |
| Laramie | 1960-1963 | TV Series | Chuck Logan / Duke Walker / Deputy Bill |
| 40 Pounds of Trouble | 1962 | Howard Piper |
| Have Gun - Will Travel | 1959-1962 | TV Series | Sheriff Matthew Tyler / Ben Mattock / Brogan / ... |
| Cheyenne | 1961-1962 | TV Series | Hal Walton / Nick / Dillard |
| Wagon Train | 1957-1962 | TV Series | Cowhand / Calso / Raleigh / ... |
| Bronco | 1962 | TV Series | Lieutenant Ames / Colton / Wes Taylor |
| The Roaring 20's | 1961 | TV Series | Frank |
| The Comancheros | 1961 | Emil Bouvier - Duelist (uncredited) |
| Tales of Wells Fargo | 1957-1961 | TV Series | Steger / Deputy / Jeff Anderson |
| Two Faces West | 1961 | TV Series | Cowlin |
| Most Dangerous Man Alive | 1961 | Lt. Fisher |
| The Cat Burglar | 1961 | Reed Taylor |
| The Life and Legend of Wyatt Earp | 1956-1961 | TV Series | Tom McLowery / Deputy Bill Tillman |
| Outlaws | 1961 | TV Series | Heff |
| Gun Fight | 1961 | Brad Santley |
| Assignment: Underwater | 1961 | TV Series | Ernest Beal |
| The Absent Minded Professor | 1961 | Communications Man (uncredited) |
| The Tall Man | 1961 | TV Series | Truman Blanchard |
| The Untouchables | 1961 | TV Series | Paul Di Marco |
| Ripcord | 1961 | TV Series | Detective |
| Five Guns to Tombstone | 1960 | Mel Dixon |
| Sugarfoot | 1960 | TV Series | Captain McHenry |
| Lawman | 1960 | TV Series | Tracy McNeil |
| Surfside 6 | 1960 | TV Series | Lou Montell |
| The Deputy | 1960 | TV Series | Tulley - Henchman |
| The Man from Blackhawk | 1960 | TV Series | Gil Harrison |
| Overland Trail | 1960 | TV Series | Will Purdue |
| Shotgun Slade | 1959-1960 | TV Series | Marshal / Dolph Peterson |
| The Millionaire | 1960 | TV Series | Johnson |
| Hotel de Paree | 1960 | TV Series | Cooper |
| Riverboat | 1959 | TV Series | Lt. Peterson |
| World of Giants | 1959 | TV Series |
| Sea Hunt | 1959 | TV Series | Harry Herbie |
| The Rebel Set | 1959 | John Mapes |
| State Trooper | 1959 | TV Series | Ben Stander |
| 26 Men | 1958-1959 | TV Series | Ranger Andy Shoreham / Ranger Eddie Graham / Ranger Andrew Shoreham / ... |
| The Restless Gun | 1958-1959 | TV Series | Bill Clayton / Jim Carter / Joe Kruger |
| The Lineup | 1959 | TV Series | Dave Kane |
| The Shaggy Dog | 1959 | FBI Agent (uncredited) |
| The Sad Horse | 1959 | Bart Connors |
| Cimarron City | 1959 | TV Series | Tom Hiller |
| Pony Express | 1959 | TV Series |
| Make Room for Daddy | 1958 | TV Series | The Colonel |
| Buckskin | 1958 | TV Series | Jaeckel |
| Jefferson Drum | 1958 | TV Series | Grant |
| Frontier Doctor | 1958 | TV Series | Charlie Pierce |
| The Texan | 1958 | TV Series | First Card Player |
| Alcoa Theatre | 1958 | TV Series | Actor |
| Thundering Jets | 1958 | Capt. Cory Dexter |
| Sky King | 1958 | TV Series | Frank Kinnard |
| The Female Animal | 1958 | Piggy |
| Fury | 1958 | TV Series | Barry |
| Broken Arrow | 1957 | TV Series | Lieutenant Fielding |
| Tales of the Texas Rangers | 1957 | TV Series | Pete Hackett |
| From Hell It Came | 1957 | Kimo |
| Code 3 | 1957 | TV Series | Hopkins |
| Blondie | 1957 | TV Series | Andy |
| Footsteps in the Night | 1957 | Pat Orvello |
| Revolt at Fort Laramie | 1957 | Capt. James 'Jamie' Tenslip |
| Zombies of Mora Tau | 1957 | Jeff Clark |
| Sergeant Preston of the Yukon | 1956 | TV Series | Ed McQuade |
| Hilda Crane | 1956 | Dink Bromley |
| The Creature Walks Among Us | 1956 | Jed Grant |
| The Adventures of Champion | 1955-1956 | TV Series | Al / Jack Preston |
| Crossroads | 1955 | TV Series |
| Navy Log | 1955 | TV Series | Exec. Officer |
| Highway Patrol | 1955 | TV Series | Sergeant |
| The Loretta Young Show | 1955 | TV Series |
| To Hell and Back | 1955 | Lieutenant Manning |
| So This Is Hollywood | 1955 | TV Series | Pudge Heffledorfer |
| Cavalcade of America | 1955 | TV Series |
| Stories of the Century | 1955 | TV Series | Jack Slade |
| Public Defender | 1955 | TV Series | Pete Corey |
| The Lone Ranger | 1954 | TV Series | Stanley Ammons |
| Playgirl | 1954 | Tom Bradley |
| Magnificent Obsession | 1954 | Tom Masterson |
| Taza, Son of Cochise | 1954 | Capt. Burnett |
| The Veils of Bagdad | 1953 | Osman (as Palmer Lee) |
| The All American | 1953 | Hunter Cameron (as Palmer Lee) |
| Column South | 1953 | Chalmers (as Palmer Lee) |
| It Happens Every Thursday | 1953 | Chet Dunne (as Palmer Lee) |
| Abbott and Costello Go to Mars | 1953 | Radio Announcer (voice, uncredited) |
| The Redhead from Wyoming | 1953 | Hal Jessup (as Palmer Lee) |
| The Raiders | 1952 | Marty Smith (as Palmer Lee) |
| Back at the Front | 1952 | Capt. White (as Palmer Lee) |
| Son of Ali Baba | 1952 | Farouk (uncredited) |
| Francis Goes to West Point | 1952 | William Norton (as Palmer Lee) |
| Sally and Saint Anne | 1952 | Johnny Evans (as Palmer Lee) |
| Red Ball Express | 1952 | Tank Lieutenant (as Palmer Lee) |
| The Battle at Apache Pass | 1952 | Joe Bent (as Palmer Lee) |
| The Cimarron Kid | 1952 | Grat Dalton (uncredited) |
| Meet Danny Wilson | 1951 | Interne / Policeman (uncredited) |
| That's My Boy | 1951 | Student (as Palmer Lee) |
| Up Front | 1951 | MP with Binoculars (uncredited) |
| M | 1951 | Television Broadcaster (uncredited) |
| My Friend Irma Goes West | 1950 | Ambulance Intern (uncredited) |