Fonds consists primarily of records related to Robert Jackson's political interests and activities. Included are many original and reproduced documents from labour events in the 1930s, particularly the On to Ottawa trek but including information on other labour-related events and figures, including the Spanish Civil War and the unionism in primary resource industries. The fonds also includes many records gathered by Jackson in the 1980s and 1990s in his work commemorating the On to Ottawa trek and participating in labour-related events. It contains newsletters, bulletins and other publications, newspaper clippings, essays, and articles, correspondence, recollections and testimonials, obituaries, notes from speaking engagements, leaflets, posters, press releases, petitions, minutes, financial records, project proposals, a script, work documents, certificates, legal documents, photographs, and other records related to Jackson's political life. The file level arrangement of this fonds is based on an arrangement established in 2001 by David Yorke who undertook to order Jackson's paper by subject. The order in which Jackson kept his records is unknown. The fonds is arranged in four series: On to Ottawa Trek (1934-2000); Labour history subject files (1933-2000); Memorials (1985-2000); and Photographs ([193-?]-2000).