Harl Vincent was the pen name of Harold Vincent Schoepflin (October 19, 1893 – May 5, 1968), a mechanical engineer from Buffalo, New York, who became one of the familiar voices of early American science-fiction pulp. Between the late 1920s and the early 1940s he filled the pages of Amazing Stories and its sister magazines with adventure, gadgets, underground menaces, and planetary intrigue. Readers who know the Gernsback years of the field still meet his name on contents pages, in series titles, and in the occasional reprint that keeps those stories in print.
Schoepflin trained as a technical high-school student and enrolled at Rensselaer Polytechnic Institute, but left without finishing his freshman year when he married Ruth Hoff. The couple had a son and a daughter. Professionally he worked for Westinghouse as a mechanical engineer, installing and testing large electrical apparatus, then moved into sales engineering and later managed a local steam division. Writing was the second career that grew out of the first: after reading Hugo Gernsback’s Amazing Stories, he tried the form himself.
His debut, “The Golden Girl of Munan,” appeared in the June 1928 issue of Amazing Stories. Over roughly the next fourteen years he published more than seventy science-fiction stories in the pulps, and twice in the general-fiction magazine Argosy. That pace made him a dependable presence in an era when magazines needed reliable inventors of moons, machines, and menaces. He favored linked series as much as one-shots. Among the groups associated with his name are Professor Nilsson, Professor Timkin, Subterrania, Callisto, Carr Parker, Purple and Gray, Ridge Coler, and the Prowler tales. The Subterrania pair, in particular, shows his taste for underground-threat stories. “War of the Planets” (Amazing Stories, January 1929) is still noted for an early genre use of the word “videophone,” a small marker of how quickly pulp writers were inventing the furniture of future communication.
Vincent also stepped outside pure science fiction. In 1939–1941 he placed detective and spy pulp stories, including “Condenser Pit Murder” (Detective Fiction Weekly, December 23, 1939), “The Stool at the Bar” (Thrilling Detective, March 1940), “Alibi Mike” (Detective Novels Magazine, June 1940), “Crime by Chart” (Exciting Detective, March 1941), and “Terror in Niagara” (Thrilling Spy Stories, Spring 1940). Those titles sit beside the science-fiction list as a reminder that pulp markets rewarded writers who could shift registers without losing narrative drive.
He contributed to the 1935 round-robin “The Challenge from Beyond” in Fantasy Magazine, sharing the byline with Murray Leinster, E. E. Smith, Donald Wandrei, and Stanley G. Weinbaum: company that places him firmly among the working professionals of that decade. His fiction was vigorous and aimed at entertainment first. Commentators have sometimes found the plotting less tightly organized than the energy of the scenes; for readers of the magazines, the energy was the point.
Publication tapered off in the early 1940s. Later, living in Los Angeles, Vincent joined the Los Angeles Science Fantasy Society and the Count Dracula Society and attended local conventions. He returned to print late in life with the novel The Doomsday Planet (1966), a planetary romance and his only novel, and with the short story “Invader” in the September 1967 issue of If. He died in Los Angeles on May 5, 1968, of complications from emphysema and pneumonia.
If you are new to his work, start with “The Golden Girl of Munan,” the story that introduced him, then try series entries such as the Purple and Gray / Gray Denim material, Vagabonds of Space, or Barton’s Island, depending on what the archive has ready to hand. The detective shorts above are a short side path for readers curious about his crime-pulp voice. Modern reprint editions, including volumes associated with Villainous Press in the 2010s, have helped keep selected stories available beyond fragile pulp paper.
This site exists to honor that body of work: the engineer who wrote for the magazines, the pulp regular who built series worlds issue by issue, and the late-career novelist who came back once more before the end. Explore the archive, read a story the way a 1930s newsstand reader would have, and meet Harl Vincent on the page.
Sources: Wikipedia: Harl Vincent; Science Fiction Encyclopedia: Vincent, Harl.