London's journalism covers a variety of themes, including Socialism, boxing, and war correspondence. Among his most frequent assignments were from the Hearst papers, Collier's, and Cosmopolitan. Links to many of these pieces can be found at this website on historic journalism. Also see these collected editions:
Jack London Reports - War Correspondence, Sports Articles, And Miscellaneous Writings, edited by King Hendricks and Irving Shepard, New York: Doubleday.
Jack London: The Unpublished and Uncollected Articles and Essays, edited by Dan Wichlan, Authorhouse, 2007.
The People of the Abyss (1903)
Based on London's observations of the slums of London and illustrated with photographs taken by himself and others. Although an account of the poor in 1902 London, the argument remains valid with regard to ongoing treatment of the homeless. When given an option, choose the illustrated version.
War of the Classes (1905)
Mainly the texts of speeches London presented on behalf of socialism.
The Road (1907)
Tales of London's days as a hobo,during his travels cross-country. Profusely illustrated with photographs and drawings.
Revolution and Other Essays (1909)
Essays and stories that highlight London's Socialist thought.
The Cruise of the Snark (1913)
An autobiographical memoir of the 1907-09 voyage across the Pacific, with most emphasis upon Hawaii. For a less dramatized and detailed account of this voyage, see Charmian London's Log of the Snark and Our Hawaii.
John Barleycorn (1913)
An autobiographical memoir that deals with the debilitating effects of alcohol as personified in "The Noseless One". Though some scholars view this book to be fiction, London himself claimed it was truthful. It also discusses his support of Women's Suffrage
The Human Drift (1917)
An eclectic mix of short stories like "Small-Boat Sailing" essays such as "The Human Drift", an introduction to Two Years Before the Mast, and a couple of dramatic sketches. One of London's most delightful humor pieces, "Navigating Four Horses Through the North Bay" is also included here.