This is the first appearance in book form, first printing. (Although this and the Jungle Pub. Co. 1906 edition both have the same Feb. 1906 statement, it appears from the type wear and other evidence that the Doubleday edition was run off first.--Lilly Lib.)
First published serially in "One-Hoss Philosophy", no. 33-35, in 1905 April-October.--OCLC OLUC.
Sometimes published with sub-title: A story of Chicago.--OCLC OLUC.
"Other books by Upton Sinclair": p.  of preliminary p.
Lilly Lib. Cat. ... from the Upton Sinclair archives, no. 51 and 52
Bound in pictorial dark-olive green cloth, stamped in white and black. (Some copies in medium-olive green cloth.)