| The Beast of the City | Policeman #5 on telephone (uncredited) |
| Alias John Law | Sheriff's Deputy (uncredited) |
| Bulldog Courage | Mine guard (uncredited) |
| The Courageous Avenger | Mr. Carson (as E. Cassidy) |
| No Man's Range | Foreman Pat (uncredited) |
| The Pecos Kid | Doc Evans |
| Trail of Terror | Man with strongbox (uncredited) |
| Trails of the Wild | Barfly (uncredited) |
| Ambush Valley | Nester |
| Brand of the Outlaws | The Sheriff (as Howard Cassidy) |
| Cavalry | Henchman Bart Haines (as Edward Cassidy) |
| Desert Justice | Traffic officer (uncredited) |
| Doughnuts and Society | Barker (uncredited) |
| Everyman's Law | Homesteader (uncredited) |
| Feud of the West | Greg Walters |
| Gun Grit | Tim Hess (Rancher) |
| Hair-Trigger Casey | Karney |
| The Idaho Kid | Bartender (uncredited) |
| Lady Luck | Feldman (uncredited) |
| Law and Lead | Cattleman Association Chief (uncredited) |
| The Lion's Den | Cross Bar X hand (uncredited) |
| Men of the Plains | Inspector J.J. Gray |
| The Millionaire Kid | Red |
| Pinto Rustlers | Cowhand (uncredited) |
| Rio Grande Romance | Lewis |
| Ridin' On | Henchman (uncredited) |
| The Riding Avenger | Marshal Tom (as Edward Cassidy) |
| Rio Grande Romance | Lewis |
| Roarin' Guns | Sheriff |
| Robinson Crusoe of Clipper Island | Joe Davis, Intelligence Chief [Ch. 10] (uncredited) |
| The Rogues Tavern | Mason |
| Santa Fe Bound | Henchman Logan |
| Sundown Saunders | Taggart |
| Timber War | Logger (uncredited) |
| Toll of the Desert | Doctor Streeter (as Edward Cassidy) |
| Valley of the Lawless | Henchman (uncredited) |
| Wildcat Saunders | Dad Lawson (as Edward Cassidy) |
| Winds of the Wasteland | Mr. Dodge (Pony Express manager) |
| Aces Wild | Blacksmith |
| Boothill Brigade | John Porter |
| Boots of Destiny | Jack Harmon |
| Border Phantom | Big-City Editor (uncredited) |
| Borderland | Henchman (uncredited) |
| Cheyenne Rides Again | Ed Gleason |
| Clipped Wings | Leif Baxter, Dispatcher (as Edward Cassidy) |
| Come On, Cowboys! | Jefferson 'Jeff' Harris (as Edward Cassidy) |
| Ghost Town | Sheriff Blair (as Edward Cassidy) |
| Hit the Saddle | Sheriff Miller (as Edward Cassidy) |
| Hittin' the Trail | Sheriff Grey (as Edward Cassidy) |
| Lawless Land | Sheriff Jim (as Edward Cassidy) |
| Missing Witnesses | (uncredited) |
| Moonlight on the Range | Sheriff (uncredited) |
| The Red Rope | Logan (as Ed. Cassidy) |
| Rio Grande Ranger | Marshal (uncredited) |
| The Roaming Cowboy | Second Sheriff (uncredited) |
| S.O.S. Coast Guard | Patrol Boat Capt. Johnson [Chs. 1-3, 5, 12] (uncredited) |
| The Singing Buckaroo | Fake Deputy (as Edward Cassidy) |
| Border Wolves | Valley Falls Sheriff Haight |
| Cassidy of Bar 20 | Sheriff Hawley (as Edward Cassidy) |
| Federal Man-Hunt | The Warden (uncredited) |
| The Fighting Devil Dogs | Captain of the 'Pawnee' [Ch. 10] (uncredited) |
| Flaming Frontiers | Joe - Henchman (as Edward Cassidy) |
| Frontier Town | Sheriff Jack Walsh of Prairie City (as Edward Cassidy) |
| Ghost Town Riders | Townsman on Porch (uncredited) |
| In Early Arizona | Tom Weldon (as Edward Cassidy) |
| Man from Music Mountain | William Brady (as Edward Cassidy) |
| The Mexicali Kid | Sheriff Ed |
| Mr. Wong, Detective | Ambulance Doctor (uncredited) |
| Outlaw Express | Army Captain (uncredited) |
| The Painted Trail | U. S. Marshal Jackson |
| Panamint's Bad Man | Bartender (uncredited) |
| The Purple Vigilantes | Sheriff Jim (as Edward Cassidy) |
| Rawhide | Fuller, Saunder's Foreman (uncredited) |
| Red River Range | Marshal (uncredited) |
| Rollin' Plains | Sheriff Tomlin (as Edward Cassidy) |
| The Secret of Treasure Island | Passenger Ship Captain #2 [Ch. 12] (uncredited) |
| The Silver Trail | Frank Sheridan |
| The Speed Reporter | Edwards, a henchman |
| Starlight Over Texas | Captain Brooks |
| Stars Over Arizona | Manning foreman (uncredited) |
| Tex Rides with the Boy Scouts | Sheriff Crane (as Edward Cassidy) |
| Trailing Trouble | Shorty (uncredited) |
| The Utah Trail | Sheriff Clayton (as Edward Cassidy) |
| Where the Buffalo Roam | Hodge |
| The Arizona Kid | Morrison (banker) (uncredited) |
| The Big Guy | Police Captain (uncredited) |
| Colorado Sunset | Dairyman (uncredited) |
| Cowboys from Texas | Cattleman Jed Tyler (as Edward Cassidy) |
| Desperate Trails | Marshal Jim Cort |
| Dick Tracy's G-Men | Yacht captain [Chs. 3-4] (uncredited) |
| Frontiers of '49 | Johnson (uncredited) |
| The Green Hornet | Election Judge [Ch. 10] (uncredited) |
| Mountain Rhythm | Sheriff Dalrimple (as Edward Cassidy) |
| Outlaws' Paradise | Banker (uncredited) |
| Rovin' Tumbleweeds | Sheriff (uncredited) |
| Silver on the Sage | Pierce (card sharp) (as Ed. Cassidy) |
| Son of Frankenstein | Webber (a burgher) (uncredited) |
| Trigger Smith | Marshal Smith (as Edward Cassidy) |
| Way Down South | Slave Trader (uncredited) |
| Wild Horse Canyon | Dad Hall |
| Adventures of Red Ryder | Ira Withers [Ch. 1] (uncredited) |
| Colorado | Andy - Saloon Owner (uncredited) |
| Deadwood Dick | Committeeman Tennison Drew |
| Gaucho Serenade | Customs Officer (uncredited) |
| The Great McGinty | Detective (uncredited) |
| Knights of the Range | Texas Marshal (uncredited) |
| Mysterious Doctor Satan | Barton [Ch. 1] (uncredited) |
| Ragtime Cowboy Joe | Sheriff |
| Riders of Pasco Basin | Sheriff Ed Marlowe |
| Winners of the West | Marshal Bowers [Chs. 2, 6] (uncredited) |
| Adventures of Captain Marvel | Dodge, Captain of 'The Carfax' [Ch. 10] (uncredited) |
| Arkansas Judge | Townsman (uncredited) |
| Bury Me Not on the Lone Prairie | Sheriff |
| The Gang's All Here | Jack Norton |
| Honky Tonk | Townsman (uncredited) |
| King of the Texas Rangers | Sedley (chemist) [Ch. 6] (uncredited) |
| Rawhide Rangers | Alec Martin |
| Ridin' on a Rainbow | Rancher (uncredited) |
| Robbers of the Range | Sheriff |
| Saddlemates | Texas Ranger Captain Miller (uncredited) |
| San Francisco Docks | Dock foreman (uncredited) |
| Sea Raiders | Guard at Hospital [Ch. 6] (uncredited) |
| Sky Raiders | Denver Airport official [Ch. 2] (uncredited) |
| Wyoming Wildcat | Sheriff #2 (as Edward Cassidy) |
| Arizona Round-Up | Sheriff (uncredited) |
| House of Errors | (as Edward Cassidy) |
| The Mad Monster | Father |
| Perils of the Royal Mounted | Jenson (crooked warehouseman) [Ch.6] |
| The Phantom Plainsmen | Sheriff (uncredited) |
| Pirates of the Prairie | Chief Surveyor Allen |
| Ridin' Down the Canyon | Horse buyer Butler (uncredited) |
| S.O.S. Coast Guard | Patrol boat captain (uncredited) (archive footage) |
| Sagebrush Law | Sheriff (as Edward Cassidy) |
| Silver Queen | Colonel (uncredited) |
| The Sombrero Kid | Marshal Walker (uncredited) |
| Stardust on the Sage | Rancher Dawson (uncredited) |
| Sunset on the Desert | Sheriff (uncredited) |
| The Traitor Within | (uncredited) |
| The Avenging Rider | Lewis, 1st Sheriff (as Edward Cassidy) |
| Bullets and Saddles | Bartender Weber |
| Carson City Cyclone | Jury Foreman (uncredited) |
| Cattle Stampede | Sam Dawson |
| Cowboy in the Clouds | Sheriff Page (as Edward Cassidy) |
| Daredevils of the West | Russell (uncredited) |
| Devil Riders | Doc (replaced) |
| Law of the Northwest | Biddle (as Edward Cassidy) |
| The Man from Thunder River | Dan Bates (banker) (uncredited) |
| Raiders of Red Gap | Jim Roberts |
| Santa Fe Scouts | Sheriff (uncredited) |
| Thundering Trails | Rancher Joe Patterson (as Edward Cassidy) |
| Wolves of the Range | Dan Brady |
| The Big Bonanza | Rancher (uncredited) |
| Boss of Rawhide | Henry Colby (as Edward Cassidy) |
| Brand of the Devil | Sheriff Parker (character credited as Jeff Palin) (as Edward Cassidy) |
| Captain America | Tec-Ni-GasCo. gate guard [Ch. 7] (uncredited) |
| Dead or Alive | John Ealey (bank president) (uncredited) |
| Frontier Outlaws | Sheriff (as Edward Cassidy) |
| Fuzzy Settles Down | Weaver (Rancher) |
| Goodnight, Sweetheart | Policeman (uncredited) |
| The Great Mike | Dr. Pronnett |
| Hidden Valley Outlaws | Marshal Bud Masterson (uncredited) |
| My Buddy | Guard (uncredited) |
| The Pinto Bandit | Doc Carson (as Edward Cassidy) |
| Rustlers' Hideout | Sheriff |
| Saddle Leather Law | California Sheriff Tinsley (uncredited) |
| Saddle Leather Law | California Sheriff Tinsley (uncredited) |
| San Fernando Valley | Sheriff (uncredited) |
| Spook Town | Ranger Captain Wyatt (as Edward Cassidy) |
| Trigger Law | Johnson |
| Tucson Raiders | Sheriff Kirk (as Edward Cassidy) |
| Tucson Raiders | Sheriff Kirk (as Edward Cassidy) |
| Valley of Vengeance | Marshal Riley (uncredited) |
| Doc Humphrey |
| Arson Squad | Fire Chief O'Neill (as Edward Cassidy) |
| Bells of Rosarita | Sheriff Tom (uncredited) |
| Colorado Pioneers | Ramsey (uncredited) |
| Corpus Christi Bandits | Marshal Dan Adams |
| The Daltons Ride Again | Sproules (uncredited) |
| Enemy of the Law | Texas Ranger Captain (uncredited) |
| The Gangster's Den | Sheriff (as Edward Cassidy) |
| Manhunt of Mystery Island | Paul Melton [Chs. 1-6, 10] (as Edward Cassidy) |
| Marked for Murder | Dick Vernon |
| The Royal Mounted Rides Again | Mining Straw Boss at Decker #3 [Ch. 9] (uncredited) |
| Sheriff of Cimarron | Sheriff Sam Duncan (as Edward Cassidy) |
| Stagecoach Outlaws | Jed Bowen |
| Sunset in El Dorado | The Marshal |
| Three in the Saddle | Jim Manning (as Edward Cassidy) |
| Utah | Curry (Chicago cattle buyer) (uncredited) |
| Alias Billy the Kid | Sheriff (as Edward Cassidy) |
| Ambush Trail | Marshal Dawes (as Edward Cassidy) |
| Days of Buffalo Bill | Trail's End sheriff (as Edward Cassidy) |
| Devil Bat's Daughter | Sheriff (as Edward Cassidy) |
| The El Paso Kid | Well Fargo man Blake (as Edward Cassidy) |
| The Mysterious Mr. Valentine | Sergeant (uncredited) |
| The Navajo Kid | Sheriff Roy Landon (as Edward Cassidy) |
| Out California Way | Dr. Wilson DVM (uncredited) |
| Prairie Badmen | Doc Lattimer |
| Roaring Rangers | Bill Connor (uncredited) |
| Roll on Texas Moon | Prescott (as Edward Cassidy) |
| The Scarlet Horseman | Rosa Rita Mine Henchman [Chs. 3-4] (uncredited) |
| Six Gun Man | John Hager (uncredited) |
| Stagecoach to Denver | Land Commissioner Felton (as Edward Cassidy) |
| Sun Valley Cyclone | Theodore Roosevelt |
| Trigger Fingers | Sheriff Caldwell (as Edward Cassidy) |
| The Beginning or the End | Rafferty (uncredited) |
| Border Feud | Sheriff Steele |
| Buffalo Bill Rides Again | Sheriff (as Edward Cassidy) |
| Check Your Guns | Sheriff Dave Clark (uncredited) |
| The Fabulous Texan | (uncredited) |
| Homesteaders of Paradise Valley | The Sheriff of Center City (as Edward Cassidy) |
| Jesse James Rides Again | Grant, a Driller [Chs. 11-12] (as Edward Cassidy) |
| On the Old Spanish Trail | Sheriff (uncredited) |
| Oregon Trail Scouts | Mr. Bliss (Indian agent) (as Edward Cassidy) |
| Son of Zorro | Sheriff Moody (as Edward Cassidy) |
| Valley of Fear | Les Travers (as Edward Cassidy) |
| The Bold Frontiersman | Morton 'Mort' Harris (as Edward Cassidy) |
| Desperadoes of Dodge City | Gideon (as Edward Cassidy) |
| Superman | Eben Kent [Ch. 1] |
| "The Lone Ranger" | Col. Graves / ... (2 episodes, 1949-1950) |
| Any Number Can Play | Undetermined Role (uncredited) |
| Bad Men of Tombstone | Townsman (uncredited) |
| Roughshod | Sheriff Gardner (as Edward Cassidy) |
| Take Me Out to the Ball Game | Teddy Roosevelt (uncredited) |
| Buckaroo Sheriff of Texas | Rancher (as Edward Cassidy) |
| Fence Riders | Sheriff Tracy |
| The Savage Horde | Rancher (uncredited) |
| Silver Raiders | Colonel R. A. Scott (uncredited) |
| Singing Guns | Townsman (uncredited) |
| Storm Over Wyoming | Powell (uncredited) |
| Trail of Robin Hood | Sheriff Duffy (as Edward Cassidy) |
| Train to Tombstone | Conductor George |
| Western Pacific Agent | Train Conductor (uncredited) |
| Wyoming Mail | Sheriff (uncredited) |
| Belle Le Grand | Broker (uncredited) |
| Blazing Bullets | The Marshal (uncredited) |
| Million Dollar Pursuit | Deputy sheriff (as Edward Cassidy) |
| Oklahoma Justice | Town Banker Masters (uncredited) |
| And Now Tomorrow | |
| Black Hills Ambush | Sheriff |
| Colorado Sundown | Rancher Contemplating Vigilantism (uncredited) |
| Desperadoes' Outpost | Deputy marshal (as Edward Cassidy) |
| Night Raiders | Miller, the Banker (uncredited) |
| Talk About a Stranger | Soloway (uncredited) |
| Waco | Bank Guard (uncredited) |
| Young Man with Ideas | Train Conductor (uncredited) |
| Dream Wife | Customs Official (uncredited) |
| Savage Frontier | Townsman (uncredited) |
| Vigilante Terror | Townsman (uncredited) |
| The First Traveling Saleslady | Theodore Roosevelt |
| The Courageous Avenger | Mr. Carson (as E. Cassidy) |
| Youth Aflame | Mr. White (as Edward Cassidy) |
| Captain Mephisto and the Transformation Machine | Paul Melton (archive footage) |
| Robinson Crusoe of Mystery Island | Jim Davis (archive footage) |
| Flaming Frontiers | Joe (archive footage) |
| Dick Tracy's G-Men | Yacht captain [Chs. 3-4] (uncredited) |
| The Crooked Trail | Grimby, a miner (as Edward Cassidy) |
| The Fighting Texan | Pete Hadley |
| Sky Racket | FBI Agent Wilks |
| A Face in the Fog | Detective (uncredited) |
| Under Cover Man | Henchman Slim (as Edward Cassidy) |
| Youth Aflame | Mr. White (as Edward Cassidy) |
| Vengeance of Rannah | Sam, posing as Barlow |
| The Wages of Sin | Hotel Detective |
| Smashing the Vice Trust | (as Edward Cassidy) |
| Social Error | Cafe Owner (uncredited) |
| Wells Fargo Days | Lon Carter |
| Santa Fe Rides | Mr. Allen |
| The Reckless Buckaroo | Sheriff Madden (as Edward Cassidy) |
| "The Lone Ranger" | Col. Graves / ... (2 episodes, 1949-1950) |
| Swing, Cowboy, Swing | Sheriff (as Edward Cassidy) |
