The covers for almost every issue of "Air Wonder", "Science Wonder", "Wonder Stories" and "Wonder Stories Quarterly" were painted by Frank R. Paul, who had followed Gernsback from "Amazing Stories". The only exception was a cover image composed of colored dots, which appeared on the November 1932 issue. When the magazine moved to Beacon Publications, as "Thrilling Wonder", the fiction began to focus more on action than on ideas. The covers, often by Earle K. Bergey, typically depicted bizarre aliens and damsels in distress. In 1939, a reader, Martin Alger, coined the phrase "bug-eyed monster" to describe one such cover; the phrase subsequently entered the dictionary as a word for an alien. Several well-known writers contributed, including Ray Cummings, and John W. Campbell, whose "Brain-Stealers of Mars" series began in "Thrilling Wonder" in the December 1936 issue. A comic-strip began in August 1936, the first issue of the Beacon Publications version. It was illustrated and possibly written by Max Plaisted. The strip, titled "Zarnak", was not a success, and was cancelled after eight issues. Weisinger's successor, Friend, gave the magazine a significantly more juvenile feel. He used the alias "Sergeant Saturn" and was generally condescending to the readers; this may not have been his fault as Margulies, who was still the editorial director, probably wanted him to attract a younger readership. Under Friend's direction, Earle K. Bergey transformed the look of "Thrilling Wonder Stories" by foregrounding human figures in space, focusing on the anatomy of women in implausibly revealing spacesuits and his trademark "brass brassières". Merwin, who took over with the Winter 1945 issue, adopted a more mature approach than Friend's. He obtained fiction from writers who had previously been publishing mainly in John Campbell's "Astounding". The Summer 1945 issue of "Thrilling Wonder" included Jack Vance's first published story, "The World Thinker". Merwin also published several stories by Ray Bradbury, some of which were later included in Bradbury's collection "The Martian Chronicles". Other well-known writers that Merwin was able to attract included Theodore Sturgeon, A. E. van Vogt, and Robert A. Heinlein. "Thrilling Wonder" often published intelligent, thoughtful stories, some of which Campbell would have been unlikely to accept at "Astounding": he did not like to publish stories that showed the negative consequences of scientific advances such as nuclear power.