8vo. 3pp. publisher’s advertisements. Original green pictorial cloth (rubbed, particularly at extremities).
 
FIRST EDITION, WITH SUSTAINER’S EDITION LABEL. SIGNED BY SINCLAIR on blank leaf. 
 
Sinclair's novel portrays the harsh conditions faced by exploited immigrant workers in Chicago. Originally published serially, five publishers rejected the work as too shocking.  As he was about to self-publish a version of the novel in the present Sustainer's Edition, Doubleday, Page agreed to publish the book, and the Doubleday edition was published simultaneously with Sinclair's, which appeared under "The Jungle Publishing Company" imprint with the Socialist Party's emblem on the cover.