The author of the social studies The Goose Step and The Brass Check, he used the proceeds from his most famous novel to open the short-lived utopia Helicon Hal.  
He was the inspiration of the character of Arnaldur in the novel Salka Valka, as he had saved Halldor Laxness from deportation with the help of Stephen Crane's daughter.  The author of the social studies The Goose Step and The Brass Check, he used the proceeds from his most famous novel to open the short-lived utopia Helicon Hal.  He also wrote activist novels, which include an attack on the Sacco and Vanzetti Trial entitled Boston.  FTP, name this author of the Pulitzer Prize-winning Dragons Teeth, as well as a novel about the meat-packing industry, The Jungle.
He was the inspiration of the character of Arnaldur in the novel Salka Valka, as he had saved Halldor Laxness from deportation with the help of Stephen Crane's daughter.  
Upton Sinclair