author
A byline with a pulp-magazine backstory, this name was used on fast-moving science fiction tales in the Ziff-Davis magazines of the 1940s and 1950s. Most often linked to Robert Moore Williams, it also appeared on stories by several other notable genre writers.
E. K. Jarvis was not a single, easily identified author, but a shared house name used by Ziff-Davis for fiction published in magazines such as Amazing Stories and Fantastic Adventures. Reference sources including the Encyclopedia of Science Fiction and ISFDB describe it as a pseudonym attached to work by multiple writers.
The name is most strongly associated with Robert Moore Williams, a prolific American science-fiction writer whose other pseudonyms included John S. Browning, H. H. Harmon, and Russell Storm. Later attributions connect the Jarvis name with writers such as Robert Bloch, Paul W. Fairman, Harlan Ellison, Robert Silverberg, and Henry Slesar, depending on the specific story.
That makes E. K. Jarvis an interesting piece of magazine-era publishing history: less a personal biography than a window into how pulp science fiction was packaged, edited, and sold. Readers browsing this name are really stepping into the collaborative, sometimes anonymous world of mid-century genre magazines.