In 1904 the reviewers of The Appeal to Reason, a Socialist bulletin, provided Upton Sinclair $500 and dispatched him to Chicago to compose about the meatpacking industry. Sinclair's publication, The Jungle, was subsequently released in 1905 in The Appeal and in another socialist publication, One Hoss Philosophy, both released by J. A. Wayland. (Shore 121)
Sinclair furthermore got an agreement with Macmillan to release The Jungle in publication form. However, the reviewers at Macmillan, evidently shocked at the fundamental environment of some of Sinclair's material, provided Sinclair a register of alterations that they liked him to make ...