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| Title | Year | Status | Character |
|---|
| The Winds of War | 1983 | TV Mini-Series | President Franklin Delano Roosevelt |
| Little House on the Prairie | 1983 | TV Series | Dr. Marvin Haynes |
| Fantasy Island | 1980-1982 | TV Series | Adam Larrabee / Dr. Arthur Gates |
| Aloha Paradise | 1981 | TV Series | Horace |
| Walking Tall | 1981 | TV Series | Jim Clausen |
| The Memory of Eva Ryker | 1980 | TV Movie | William E. Ryker |
| Power | 1980 | TV Movie | Ben Frelinghuysen |
| Condominium | 1980 | TV Series | Lee Messenger |
| The Billion Dollar Threat | 1979 | TV Movie | Mike Larson |
| The Millionaire | 1978 | TV Movie | George Mathews |
| The Clone Master | 1978 | TV Movie | Ezra Louthin |
| Wheels | 1978 | TV Mini-Series | Lowell Baxter |
| Having Babies | 1978 | TV Series | Dr. Franklin |
| The Bob Newhart Show | 1977 | TV Series | Alan Dreeben |
| Oh, God! | 1977 | Sam Raven |
| Westside Medical | 1977 | TV Series | Everett Meade |
| Charlie Cobb: Nice Night for a Hanging | 1977 | TV Movie | McVea |
| Testimony of Two Men | 1977 | TV Mini-Series | Dr. Jim Spaulding |
| Hunter | 1977 | TV Series | Harold Baker |
| Once an Eagle | 1976 | TV Mini-Series | Ed Caldwell |
| Arthur Hailey's the Moneychangers | 1976 | TV Mini-Series | Jerome Patterton |
| The Boy in the Plastic Bubble | 1976 | TV Movie | Dr. Gunther |
| Nightmare in Badham County | 1976 | TV Movie | Judge |
| Return to Earth | 1976 | TV Movie | Col. Edwin E. Aldrin |
| McNaughton's Daughter | 1976 | TV Mini-Series | Moses Bellman |
| Cannon | 1976 | TV Series | Benjamin Holbrook |
| Medical Center | 1975 | TV Series | Dr. Bycroft |
| Murder on Flight 502 | 1975 | TV Movie | Dr. Kenyon Walker |
| Medical Story | 1975 | TV Series | Dr. Marshak |
| Search for the Gods | 1975 | TV Movie | Dr. Henderson |
| Adventures of the Queen | 1975 | TV Movie | J.L. Dundeen |
| The Log of the Black Pearl | 1975 | TV Movie | Captain Fitzsimmons |
| The Missiles of October | 1974 | TV Movie | U.N. Ambassador Adlai Stevenson |
| Owen Marshall, Counselor at Law | 1973 | TV Series |
| Cancel My Reservation | 1972 | John Ed |
| Something Evil | 1972 | TV Movie | Harry Lincoln |
| The Last of the Powerseekers | 1971 | TV Movie | Baylor Carlyle |
| Doctors' Wives | 1971 | Jake Porter |
| The Most Deadly Game | 1970-1971 | TV Series | Ethan Arcane |
| The Survivors | 1969 | TV Series | Baylor Carlyle |
| The Immortal | 1969 | TV Series | Dr. Matthew Pearce |
| The F.B.I. | 1966-1968 | TV Series | Mark Dryden / Captain Jennerson |
| The Virginian | 1968 | TV Series | Jeremiah |
| Rosemary's Baby | 1968 | Dr. Sapirstein |
| CBS Playhouse | 1968 | TV Series | Ned's father |
| Gunsmoke | 1967 | TV Series | Sheriff Bassett |
| Run for Your Life | 1967 | TV Series | Cal Phillips |
| The Invaders | 1967 | TV Series | Morgan Tate |
| Wings of Fire | 1967 | TV Movie | Doug Sanborn |
| 12 O'Clock High | 1967 | TV Series | Commodore Leon Crompton |
| Bob Hope Presents the Chrysler Theatre | 1967 | TV Series | Dr. Charles Chapman |
| The Professionals | 1966 | Grant |
| Rawhide | 1961-1965 | TV Series | Marshal Hanson Dickson / Judge Quince |
| The Bell Telephone Hour | 1965 | TV Series | Host |
| Seaway | 1965 | TV Series | Captain Folsom |
| The Eleventh Hour | 1963-1964 | TV Series | Dr. L. Richard Starke |
| Dr. Kildare | 1963 | TV Series | Dr. L Richard Starke |
| Alcoa Premiere | 1963 | TV Series | Julian Wells / Dr. Richard Meredith |
| Death Valley Days | 1962 | TV Series | Daniel Quint |
| Golden Showcase | 1962 | TV Series | Mr. Halevy |
| Westinghouse Presents: The Dispossessed | 1961 | TV Movie | Lambertson |
| Checkmate | 1961 | TV Series | Governor Tom Barker |
| The Dick Powell Theatre | 1961 | TV Series | Judge Hansen |
| The Dinah Shore Chevy Show | 1961 | TV Series | Dr. Alec Harvey |
| The DuPont Show with June Allyson | 1961 | TV Series | Willard Mitchell |
| The Barbara Stanwyck Show | 1960 | TV Series | Dobson |
| Sunday Showcase | 1960 | TV Series | Thomas Jefferson |
| Sunrise at Campobello | 1960 | Franklin Delano Roosevelt |
| Our American Heritage | 1959 | TV Series | Thomas Jefferson |
| The Christmas Tree | 1958 | TV Movie | Theron |
| Suspicion | 1957 | TV Series | Detective Thorpe |
| The United States Steel Hour | 1954-1957 | TV Series | David Durfee / Walt |
| Overseas Press Club - Exclusive! | 1957 | TV Series | Eddy Gilmore / Col. Andy Morgan |
| Kraft Theatre | 1957 | TV Series |
| Climax! | 1956-1957 | TV Series | Damon Runyon / Hap Kennelly / Phillip Hardecker, Sr. |
| The Alcoa Hour | 1957 | TV Series | Dutch Scranton |
| The Kaiser Aluminum Hour | 1957 | TV Series | Nat Hanson |
| Studio One in Hollywood | 1955-1957 | TV Series | Walter Preston / Todd McNeill |
| Studio 57 | 1957 | TV Series | Steve |
| Schlitz Playhouse | 1956 | TV Series | Joe McQuade |
| Zane Grey Theater | 1956 | TV Series | Joel Todd |
| The Ford Television Theatre | 1956 | TV Series | David Ewing / Jonathan Drexel |
| Playhouse 90 | 1956 | TV Series | Eddie Hanneman |
| Goodyear Playhouse | 1955-1956 | TV Series | Hank Patten |
| Man Against Crime | 1956 | TV Series |
| Playwrights '56 | 1956 | TV Series | John Hinks |
| Screen Directors Playhouse | 1956 | TV Series | Dr. Martin Kelog |
| The Philco-Goodyear Television Playhouse | 1948-1956 | TV Series | Porter / Tice Collins |
| Star Stage | 1956 | TV Series |
| The Court-Martial of Billy Mitchell | 1955 | Congressman Frank R. Reid |
| The Devil's Disciple | 1955 | TV Movie | Pastor Anderson |
| General Electric Theater | 1955 | TV Series | Col. Tom Wheeler |
| The Elgin Hour | 1954 | TV Series | Walter |
| Man Against Crime | 1949-1954 | TV Series | Mike Barnett |
| Lady on a Train | 1945 | Jonathan Waring |
| Delightfully Dangerous | 1945 | Arthur Hale |
| Guest in the House | 1944 | Douglas Proctor |
| Stage Door Canteen | 1943 | Ralph Bellamy |
| The Great Impersonation | 1942 | Sir Edward Dominey / Baron Leopold von Ragenstein |
| Men of Texas | 1942 | Major Lamphere |
| Lady in a Jam | 1942 | Stanley Gardner |
| The Ghost of Frankenstein | 1942 | Erik Ernst |
| The Wolf Man | 1941 | Colonel Montford |
| Ellery Queen and the Murder Ring | 1941 | Ellery Queen |
| Ellery Queen and the Perfect Crime | 1941 | Ellery Queen |
| Dive Bomber | 1941 | Lance Rogers |
| Affectionately Yours | 1941 | Owen Wright |
| Ellery Queen's Penthouse Mystery | 1941 | Ellery Queen |
| Footsteps in the Dark | 1941 | Dr. Davis |
| Ellery Queen, Master Detective | 1940 | Ellery Queen |
| Meet the Wildcat | 1940 | Lt. Brad Williams |
| Public Deb No. 1 | 1940 | Bruce Fairchild |
| Dance, Girl, Dance | 1940 | Steve Adams |
| Queen of the Mob | 1940 | FBI Agent Scott Langham |
| Brother Orchid | 1940 | Clarence Fletcher |
| Flight Angels | 1940 | Bill Graves |
| His Girl Friday | 1940 | Bruce Baldwin |
| Coast Guard | 1939 | Lt. Raymond 'Ray' Dower |
| Blind Alley | 1939 | Dr. Shelby |
| Let Us Live | 1939 | Lieutenant Everett |
| Smashing the Spy Ring | 1938 | John Baxter |
| Trade Winds | 1938 | Ben Blodgett |
| Girls' School | 1938 | Michael Hendragin |
| Carefree | 1938 | Stephen Arden |
| Boy Meets Girl | 1938 | C. Elliott Friday |
| Fools for Scandal | 1938 | Phillip Chester |
| The Crime of Doctor Hallet | 1938 | Dr. Paul Hallet |
| The Awful Truth | 1937 | Daniel Leeson |
| Screen Snapshots Series 16, No. 12 | 1937 | Documentary short | Ralph Bellamy |
| It Can't Last Forever | 1937 | Russ Matthews |
| Let's Get Married | 1937 | Kirk Duncan |
| Counterfeit Lady | 1936 | Johnny Pierce |
| Wild Brian Kent | 1936 | Brian Kent |
| The Man Who Lived Twice | 1936 | Dr. James Blake / 'Slick' Rawley |
| Straight from the Shoulder | 1936 | Curt Hayden |
| The Final Hour | 1936 | John Vickery |
| Roaming Lady | 1936 | Daniel S. 'Dan' Bailey |
| Dangerous Intrigue | 1936 | Tony Halliday |
| Hands Across the Table | 1935 | Allen Macklyn |
| Navy Wife | 1935 | Dr. Quentin Harden |
| The Healer | 1935 | Dr. Holden |
| Air Hawks | 1935 | Barry Eldon |
| Eight Bells | 1935 | Steve Andrews |
| The Wedding Night | 1935 | Fredrik Sobieski |
| Gigolette | 1935 | Terry Gallagher |
| Rendezvous at Midnight | 1935 | Commissioner Robert Edmonds |
| Helldorado | 1935 | J.F. Van Avery |
| Woman in the Dark | 1934 | John Bradley |
| Girl in Danger | 1934 | Inspector Steve Trent |
| One Is Guilty | 1934 | Police Inspector Steve Trent |
| The Crime of Helen Stanley | 1934 | Inspector Steve Trent |
| This Man Is Mine | 1934 | Jim Dunlap |
| Once to Every Woman | 1934 | Dr. Barclay |
| Spitfire | 1934 | George Fleetwood |
| Before Midnight | 1933 | Inspector Steve Trent |
| Ever in My Heart | 1933 | Jeff |
| Ace of Aces | 1933 | Capt. / Maj. Blake |
| Blind Adventure | 1933 | Jim Steele |
| Headline Shooter | 1933 | Hal Caldwell |
| Flying Devils | 1933 | 'Speed' Hardy |
| The Narrow Corner | 1933 | Eric Whittenson |
| Picture Snatcher | 1933 | McLean |
| Destination Unknown | 1933 | Stowaway |
| Below the Sea | 1933 | McCreary |
| Parole Girl | 1933 | Joseph B. 'Joe' Smith |
| Second Hand Wife | 1933 | Carter Cavendish |
| Air Mail | 1932 | Mike Miller |
| Wild Girl | 1932 | Jack Marbury |
| Almost Married | 1932 | Deene Maxwell |
| Rebecca of Sunnybrook Farm | 1932 | Dr. Ladd |
| The Woman in Room 13 | 1932 | John Bruce |
| Young America | 1932 | Judge Blake |
| Disorderly Conduct | 1932 | Captain Tom Manning |
| Forbidden | 1932 | Holland |
| Surrender | 1931 | Captain Ebbing |
| West of Broadway | 1931 | Mac - The Ranch Foreman |
| The Magnificent Lie | 1931 | Bill Childers |
| The Secret 6 | 1931 | Johnny Franks |
| Pretty Woman | 1990 | James Morse |
| Christine Cromwell | 1989-1990 | TV Series | Cyrus Blain |
| War and Remembrance | 1988-1989 | TV Mini-Series | President Franklin Delano Roosevelt |
| The Good Mother | 1988 | Frank - Grandfather |
| Coming to America | 1988 | Randolph Duke |
| L.A. Law | 1988 | TV Series | August Redding |
| Matlock | 1987 | TV Series | Sen. Lambert Crawford |
| Amazon Women on the Moon | 1987 | Mr. Gower (segment "Titan Man") |
| Disorderlies | 1987 | Albert Dennison |
| Hotel | 1985-1986 | TV Series | Jake Cabot
Uncle Jake Cabot |
| The Twilight Zone | 1986 | TV Series | Emile Francis Bendictson (segment "Monsters!") |
| Space | 1985 | TV Mini-Series | Paul Stidham |
| The Fourth Wise Man | 1985 | TV Movie | Abgarus |
| The Love Boat | 1981-1984 | TV Series | Herbert Fleming / Arnold Hamilton |
| Love Leads the Way: A True Story | 1984 | TV Movie | Sen. Christi |
| Trading Places | 1983 | Randolph Duke |