Pulp Serials of the 1930s
In the 1930s, more pulp serials focused on SFF emerged, including Astounding Stories of Super Science (1930) (aka astounding Stories, aka Astounding Science Fiction, aka Analog Science Fiction).
Under the editorship of F. Orlin Tremaine in the 1930s, Astounding published works by H.P. Lovecraft, Frank Belknap Long, Jr., and Eando Binder (a pen-name for Otto and Earl Binder, authors of the classic scifi story "I,Robot"; Otto is the co-creator of Supergirl).
In the late 1930s, scifi great John W. Campbell, Jr. took over the editor position at Astounding. He was also an author, and as an editor is credited as having enormous influence on the Golden Age of Science Fiction. Already in the 1930s he was publishing and guiding authors such as Isaac Asimov and Canadian A.E. Van Vogt.
Amazing Stories was still publishing, now under the editorship of Raymond A. Palmer. In 1939, Isaac Asimov's first published story, "Marooned Off Vesta" was published in Amazing Stories v.13, n.3.
Weird Tales continued with editor Farnsworth Wright; notable publications in the 30s include the first appearances of Robert E. Howard's Conan the Barbarian (v.24, n.5 and v.25, n.5) and Soloman Kane (v. 16, n.2; v.18,n.2; v.20,n.1) characters.