Science Fiction's Beginnings

From its earliest days, when Hugo Gernsback first inserted stories in the monthly Electrical Experimenter, the primary outlet and market for science fiction was magazines. The Experimenter was the size of Life. So was Amazing Stories, the all-fiction magazine Gernsback launched in 1926. In the thirties, the pulp magazines shrank to standard quarto, but doubled in thickness as publishers used the cheapest paper around. 

John Baxter, A Pound of Paper, 2003