Above, assorted covers of the Spanish science fiction series Luchadores del Espacio, or Space Fighters, from Editorial Valenciana, created and written by Pascual Enguídanos Usach under the pseudonym George. H. White, with other authors like Alfonso Arizmendi Regaldie, José Luis Sanchis Benet (writing as Joe Bennett), and Pedro Domingo Mutiñó (as P. Danger) also involved. Art is mostly by José Luis Macias, with a few contributions from Vicente Ibáñez Sanchís and José Lanzón Piera. A couple of these images came from audiolibrosdebolsillo (where you can download audio copies), so thanks to them.
1937—Carothers Patents Nylon
Wallace H. Carothers, an American chemist, inventor and the leader of organic chemistry at DuPont Corporation, receives a patent for a silk substitute fabric called nylon. Carothers was a depressive who for years carried a cyanide capsule on a watch chain in case he wanted to commit suicide, but his genius helped produce other polymers such as neoprene and polyester. He eventually did take cyanide—not in pill form, but dissolved in lemon juice—resulting in his death in late 1937.