John Russell Fearn (1908–1960) was a British writer, one of the first to appear in American pulp science fiction magazines. A prolific author, he published his novels also as Vargo Statten and with various pseudonyms including Thornton Ayre, Polton Cross, Geoffrey Armstrong, John Cotton, Dennis Clive, Ephriam Winiki, Astron Del Martia. Source: Wikipedia (en)