
Acting
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 work at various film studios at the then motion picture capital, Fort Lee, New Jersey, including a bit part in the highly popular serial, The Perils of…

Do You Take This Stranger?
as G.R. Jarvis
Revenge Is My Destiny
as Gregory Mann

Rosemary's Baby
as Roman Castevet

A Covenant with Death
as Col. Oates

How to Murder Your Wife
as Judge Blackstone

Joy in the Morning
as Dean James Darwent

Stampede at Bitter Creek
as Sam Underwood

What Makes Sammy Run?
as H.L. Harrington

Strange Witness
as Christopher

Tammy and the Bachelor
as Professor Brent

The Name of the Game
as Clarence Dunhill · 1 ep.

The Girl from U.N.C.L.E.
as Professor Antrum · 1 ep.

Daniel Boone
as Jasper Ledbedder · 1 ep.
Profiles in Courage
as Oscar W. Underwood · 1 ep.

The Outer Limits
as William Lyons Selby · 1 ep.

Dr. Kildare
as Dr. Andrew Bennett · 1 ep.

Ben Casey
5 ep.

Cain's Hundred
as Joseph Callan · 1 ep.

Target: The Corruptors!
1 ep.

Thriller
as Edward Stapleton · 1 ep.
Beyond a Reasonable Doubt
1956