The fonds consists of colonization files (including those of Department of Natural Resources, Department of Colonization and Development, Canadian Colonization Association, and various colonization boards) (1886-1940); Advisory Committee minutes and reports (1916-1958); Executive Branch files (1911-1952); P.L. Naismith and S.G. Porter correspondence (1912-1957); coal files (1904-1911); and British Columbia Land Department files (1896-1926) as well as land sale maps, building plans, plans and drawings of railway structures & equipment from the CPR Mechanical Department.

The fonds consists of constitutions and bylaws, minutes of the District Executive Board, proceedings of conventions, general correspondence, records of Workmen’s Compensation and Unemployment Insurance appeals, correspondence of District officers, correspondence with mine operators and Local Unions, financial records, membership records, reports and briefs to commissions of inquiry and legislators, records of negotiations and labour disputes, collective agreements with employers, records of Local Unions, newspaper clippings, collected miscellany, photographs, and an oral history interview. Records of the Welfare and Retirement Fund include minutes, decisions, annual reports, financial records, correspondence, reports, agreements, mine operators’ employment records, and case files of Welfare and Retirement Fund beneficiaries.