Murray Leinster was a pen name of William Fitzgerald Jenkins, an American writer of genre fiction, particularly of science fiction. He wrote and published more than 1,500 short stories and articles, 14 movie scripts, and hundreds of radio scripts and television plays.
Leinster's "Juju" was the cover story of The Thrill Book in October 1919.
Leinster's "The Fifth-Dimensional Catapult" was the cover story in the January 1931 Astounding Stories.
Leinster's "Planet of Sand" was cover-featured on the February 1948 issue of Famous Fantastic Mysteries.
Leinster's "The Strange Invasion" was the cover story on the April 1958 issue of Satellite Science Fiction. It was issued in book form later that year as War with the Gizmos.
Pulp magazines were inexpensive fiction magazines that were published from 1896 until around 1955. The term "pulp" derives from the cheap wood pulp paper on which the magazines were printed. In contrast, magazines printed on higher-quality paper were called "glossies" or "slicks". The typical pulp magazine had 128 pages; it was 7 inches (18 cm) wide by 10 inches (25 cm) high, and 0.5 inches (1.3 cm) thick, with ragged, untrimmed edges. Pulps were the successors to the penny dreadfuls, dime novels, and short-fiction magazines of the 19th century.
Cover of the pulp magazine Spicy Detective Stories vol. 2, #6 (April 1935) featuring "Bullet from Nowhere" by Robert Leslie Bellem
November 1927 issue of Black Mask, featuring The Continental Op
Cover of the pulp magazine Dime Mystery Book Magazine, January 1933
Image: Detective Book Magazine 002