The fonds consists of personal diaries and journals (1893-1918). Includes photographs, correspondence, reference material, and articles written by Hamilton related to David Thompson and the Windermere area (1912-1942).

The fonds consists of articles of association and bylaws (1882-1964); minutes (1882-1965); annual reports (1883-1968); legal documents and agreements (1882-1914); shareholders' records (1882-1966); records of townsite sales (1882-1910); records of farmland sales (1882-1968); applications and contracts with individual purchasers (1917-1934); registers of deeds transfers (1883-1977); some land examination records (1913-1927); correspondence of the Land Commissioner, especially Virginie Smith (1887-1977); financial records including cashbooks, journals and ledgers (1882-1968); and records related to mineral rights and oil and gas leases (1930-1969). Includes records of the company's affiliate, Western Provinces Land Company (1925-1969).

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.