Harl Vincent (full name Harold Vincent Schoepflin) was an American science fiction writer and mechanical engineer, born at the end of the 19th Century.

Almost all of Harl Vincent's work in science fiction were short stories, published in "pulp" magazines including "Amazing Stories", "Astounding Stories" and "Astounding Science-Fiction".

The Doomsday Planet was the only story that was published as a full novel in paperback.

Bibliography

    Short Fiction Series
    Professor Nilsson
    • The Golden Girl of Munan (Amazing Stories Jun 1928)
    • The War of the Planets (Amazing Stories Jan 1929)
    Professor Timkin
    • Venus Liberated (Amazing Stories Quarterly Summer 1929)
    • Faster Than Light (Amazing Stories Quarterly Fall/Winter 1932)
    Subterrania
    • The Menace from Below (Science Wonder Stories, Jul 1929)
    • The Return to Subterrania (Science Wonder Stories, Apr 1930)
    Callisto
    • The Explorers of Callisto (Amazing Stories Feb 1930)
    • Callisto at War (Amazing Stories Mar 1930)
    Carr Parker
    • Vagabonds of Space (Astounding Stories of Super-Science Nov 1930)
    • Creatures of Vibration (Astounding Stories Jan 1932)
    Purple and Gray
    • Gray Denim (Astounding Stories of Super-Science Dec 1930)
    • Power (Amazing Stories Jan 1932)
    • Master Control (Astonishing Stories Apr 1940)
    Ridge Coler
    • Water-Bound World (Amazing Stories Quarterly Spring/Summer 1932)
    • When the Comet Returned (Amazing Stories Apr 1933)
    • Lost City of Mars (Astounding Stories Feb 1934)
    Prowler
    • Prowler of the Wastelands (Astounding Stories Apr 1935)
    • Return of the Prowler (Astounding Science-Fiction Nov 1938)
    Non series
    • The Ambassador from Mars (Amazing Stories Sep 1928)
    • The Seventh Generation (Amazing Stories Quarterly Winter 1929)
    • Barton's Island (Amazing Stories Aug 1929)
    • The Yellow Air-Peril (Air Wonder Stories Sep1929)
    • Through the Air Tunnel (Air Wonder Stories Oct 1929)
    • Microcosmic Buccaneers (Amazing Stories Nov 1929)
    • The Colloidal Menace (Amazing Stories Dec 1929)
    • Old Crompton's Secret (Astounding Stories of Super-Science Feb 1930)
    • Before the Asteroids (Science Wonder Stories Mar 1930)
    • The Terror of Air-Level Six (Astounding Stories of Super-Science Jul 1930)
    • Silver Dome (Astounding Stories of Super-Science Aug 1930)
    • Free Energy (Amazing Stories Sep 1930)
    • Tanks Under the Sea (Amazing Stories Jan 1931)
    • Terrors Unseen (Astounding Stories Mar 1931)
    • Invisible Ships (Amazing Stories Quarterly Spring 1931)
    • Too Many Boards (Amazing Stories Apr 1931)
    • Beyond the Dark Nebula (Argosy Apr 1931)
    • The Moon Weed (Astounding Stories Aug 1931)
    • The Copper-Clad World (Astounding Stories Sept 1931)
    • Red Twilight (Argosy Sep 1931)
    • A Matter of Ethics (Amazing Stories Oct 1931)
    • Sky Cops" (Amazing Stories, Dec 1931)
    • Once in a Blue Moon (Amazing Stories Quarterly Winter 1932)
    • Vulcan's Workshop (Astounding Stories Jun 1932)
    • Thia of the Drylands (Amazing Stories Jul 1932)
    • Roadways of Mars (Amazing Stories Dec 1932)
    • Wanderer of Infinity (Astounding Stories Mar 1933)
    • Cavern of Thunders (Amazing Stories Jul 1933)
    • Whisper of Death (Amazing Stories Nov 1933)
    • Telegraph Plateau (Astounding Stories Nov 1933)
    • Master of Dreams (Amazing Stories Jan 1934)
    • Cat's Eye (Amazing Stories Apr 1934)
    • Rex (Astounding Stories Jun 1934)
    • Synthetic (Marvel Tales July/Aug 1934)
    • The Barrier (Amazing Stories Sep 1934)
    • Cosmic Rhythm (Astounding Stories Oct 1934)
    • Energy (Astounding Stories Jan 1935)
    • Valley of the Rukh (Amazing Stories Feb 1935)
    • The Plane Compass (Astounding Stories Jun 1935)
    • Parasite (Amazing Stories Jul 1935)
    • The Challenge from Beyond (Fantasy Magazine Sept 1935)
    • Prince Deru Returns (Amazing Stories Dec 1938)
    • Newscast (Marvel Science Stories April/May 1939)
    • The Devil Flower (Fantastic Adventures May 1939)
    • The Morons (Astounding Science-Fiction Jun 1939)
    • Mystery of the Collapsing Skyscrapers (Amazing Stories Aug 1939)
    • Lightning Strikes Once (Marvel Science Stories Aug 1939)
    • Power Plant (Astounding Science-Fiction Nov 1939)
    • Neutral Vessel (Astounding Science-Fiction Jan 1940)
    • High-Frequency War (Astounding Science-Fiction Feb 1940)
    • Undersea Prisoner (Amazing Stories Feb 1940)
    • Gravity Island (Super Science Stories Mar 1940)
    • Deputy Correspondent (Astounding Science-Fiction Jun 1940)
    • Life Inside a Wall (Science Fiction Quarterly Summer 1940)
    • Trouble Shooter (Super Science Stories, Jul 1940)
    • Other World (Astonishing Stories Oct 1940)
    • Grave of the Achilles (Captain Future Winter 1941)
    • Lunar Station (Comet Stories Jan 1941)
    • Crime by Chart (Exciting Detective Mar 1941)
    • Voice from the Void (Amazing Stories Jun 1942)
    • Invader (If Sep 1967)
    • The Lethal Planetoid (Spaceway Jan 1969)
    • Space Storm (Famous Science Fiction Spring 1969)
    Novels