Sidney Alderman Blackmer (13 July 1895 – 6 October 1973) was an American actor.
Blackmer was born and raised in Salisbury, North Carolina. He started off in an insurance and financial business but gave up on it. While working as a builder's laborer on a new building, he saw a Pearl White serial being filmed and immediately decided to go into acting. Blackmer went to New York hoping to act on the stage. While in the city, he took jobs and extra w...
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Rosemary's Baby
As Roman Castevet
My Girl Tisa
As Theodore Roosevelt
Beyond a Reasonable Doubt
As Austin Spencer
Love Crazy
As Lawyer George Renny
High Society
As Seth Lord
People Will Talk
As Arthur Higgins
Duel in the Sun
As The Lover
How to Murder Your Wife
As Judge Blackstone
The Great Swindle
As Dave Lennox
Trapped in the Sky
As Mann
Little Caesar
As Big Boy
Within the Law
As George Demarest
The Last Gangster
As San Francisco Editor
Quiet Please, Murder
As Martin Cleaver
The Officer and the Lady
As Blake Standish
Accused of Murder
As Frank Hobart
The Count of Monte Cristo
As Mondego
Charlie Chan at Monte Carlo
As Victor Karnoff
Nazi Agent
As Arnold Milbar
It's a Wonderful World
As Al Mallon
The High and the Mighty
As Humphrey Agnew
Third Finger, Left Hand
As Hughie Wheeler
Ellery Queen and the Perfect Crime
As Anthony Rhodes
Heart of the West
As Big John Trumbull
Broadway Rhythm
As Press Agent
The Panther's Claw
As Police Commissioner Thatcher Colt
Cocktail Hour
As Lawton
Wilson
As Josephus Daniels
Thank You, Mr. Moto
As Herr Eric Koeger
The Feminine Touch
As Freddie Bond
In Old Chicago
As General Phil Sheridan
The House of Secrets
As Tom Starr
Always in My Heart
As Philip Ames
Behind the Green Lights
As Raymond Cortell
Missing Girls
As Dan Collins
The President's Mystery
As George Sartos
While New York Sleeps
As Ralph Simmons
Convict's Code
As Gregory Warren
Murder Among Friends
As Mr. Wheeler
Framed
As Tony Bowman
Murder in Times Square
As George Nevins
Johnny Dark
As James Fielding
The Monroe Doctrine
As Theodore Roosevelt
Joy in the Morning
As Dean James Darwent
Down Mexico Way
As Ellery Gibson
The Lady and the Monster
As Eugene Fulton
An Intimate Dinner in Celebration of Warner Bros. Silver Jubilee
As Self
Good-bye Love
As Chester Hamilton
False Pretenses
As Kenneth Alden
Shadows of the Orient
As King Moss
From Hell to Heaven
As Cliff Billings
Trade Winds
As Thomas Bruhme II
The Women Men Marry
As Walter Wiley
Saturday's Hero
As T.C. McCabe
Washington Story
As Philip Emery
The San Francisco Story
As Andrew Cain
Hotel for Women
As McNeil
The Lady Who Dared
As Charles Townsend
This Man Is Mine
As Mort Holmes
The Fire-Trap
As Cedric McIntyre
Great God Gold
As John Hart
Maryland
As Spencer Danfield
I Want a Divorce
As Erskine Brandon
A Covenant with Death
As Col. Oates
John Meade's Woman
As Rodney
Transatlantic Merry-Go-Round
As Lee Lother
Down to Their Last Yacht
As Barry Forbes
The View from Pompey's Head
As Garvin Wales
Kismet
As Wazir Mansur
Suez
As Marquis Du Brey
A Notorious Gentleman
Sharpshooters
As Baron Orloff
Angels with Broken Wings
As Guy Barton
Heidi
As Sesemann
Deluge
As Martin Webster
Land of Liberty
As Theodore Roosevelt (edited from 'Teddy the Rough Rider')
Buffalo Bill
As Theodore Roosevelt (uncredited)
Wife, Doctor and Nurse
As Dr. Gordon Therberg
The Girl Who Came Back
As Bill Rhodes
The Love Racket
Revenge Is My Destiny
As Gregory Mann
The President Vanishes
As D.L. Voorman
The Wrecker
As Tom Cummings
Streamline Express
As Gilbert Landon
Fast and Loose
As 'Lucky' Nolan
Mothers Cry
As Mr. Gerald Hart
Teddy the Rough Rider
As Theodore Roosevelt
Do You Take This Stranger?
As G.R. Jarvis
Unmarried
As Cash Enright
Woman Trap
As Riley Ferguson
Tammy and the Bachelor
As Professor Brent
Forced Landing
As Tony Bernardi
It's a Wise Child
As Steve
Smart Girl
As Harry Courtland
The Bad Man
As Morgan Pell
Straight, Place and Show
As 'Lucky' Braddock
Speed to Burn
As Hastings
Rookies on Parade
As Augustus Moody
I Escaped from the Gestapo
As Bergen
Sabotage Squad
As Carlyle Harrison
Law of the Pampas
As Ralph Merritt
This Is My Affair
As President Theodore Roosevelt
In Old Oklahoma
As Teddy Roosevelt
Strictly Modern
As Heath Desmond
A Doctor's Diary
As Dr. Anson Ludlow
Dance, Girl, Dance
As Puss in Boots
Cheers for Miss Bishop
As John Stevens
Sweethearts and Wives
As Anthony Peel
The Little Colonel
As Swazey
Early to Bed
As Rex Daniels
Florida Special
As Jack Macklyn
The Little Foxes
As Ben
Obliging Young Lady
As Henry - George's Attorney
What Makes Sammy Run?
As H.L. Harrington
A Song Is Born
As Adams
Girl Overboard
As Alex LeMaire
Gallant Lady
As Steve Carey
Woman Hungry
As Geoffrey Brand
Down on the Farm
As Political Boss
March On, America!
As Theodore Roosevelt (archive footage) (uncredited)
A Most Immoral Lady
As Humphrey Sergeant
Michael O'Halloran
As Jim Mintum
Cain's Hundred
As Joseph Callan
The Girl from U.N.C.L.E.
Hallmark Hall of Fame
Alfred Hitchcock Presents
As Frank Partridge
Target: The Corruptors!
Westinghouse Desilu Playhouse
Daniel Boone
As Jasper Ledbedder
Thriller
As Edward Stapleton
Climax!
As Prrof. Watson
Profiles in Courage
As Oscar W. Underwood
Matinee Theater
The Adventures of Jim Bowie
The Philco Television Playhouse
As Marvin Platt
Wanted: Dead or Alive
As Judge Cooper
The Rifleman
Ben Casey
The Texan
General Electric Theater
As Christopher
Suspense
As Dr. Steven Archer
Robert Montgomery Presents
Dick Powell's Zane Grey Theatre
As Judge Hanavan
Tales of Tomorrow
Lights Out
Dr. Kildare
As Dr. Carleton Lantzinge
The Outer Limits
As William Lyons Selby
The Star and the Story
The Ed Sullivan Show
As Self
The Name of the Game
As Roman Stepanak