Fonds consists of personal records of the Aitken family and material related to the employment of Thomas and Isaac Aitken. Includes correspondence to Thomas Aitken related to compensation and pension payments; invoices and receipts for the funeral and burial of Mary A. Greenwell and John B.Greenwell; information circulars from the Workmen's Compensation Board, the Unemployment Insurance Commission and the New Vancouver Coal Mining and Land Company; Thomas Aitken's Sick and Accident fund passbook from the Western Fuel Corporation; Certificates of Competency for Thomas and Isaac Aitken; copies of the Constitution of the International Union of the United Mine Worker's of America, the Wage Agreement between Canadian Collieries and UMWA, District No. 18 and a copy of the I.C.S. Coal Miner's Handbook; a handbill for a union meeting, a medical certificate for Isaac; and a small notebook that records cheques sent and received and various other items. Also included are the eye glasses and cases of Thomas and Mary Aitken.

The fonds consists of conference reports, minutes, union newspapers, correspondence, clippings, press releases, bylaws, agreements, contract negotiations, the constitutions and rituals of Mine Mill and Steel, various submissions and reports to government bodies and Royal commissions, Case files and the drafts and manuscript for Red Bait.
The fonds is arranged in three series: 1. International Union of Mine Mill and Smelter Workers (Canada) - Executive director's records 2. United Steelworkers' of America - Staff representative and Compensation officer's records 3. Retirement. Series one is arranged in four subseries: Conventions Newsletters Memorabilia Operational records. Series two is arranged in four subseries: USWA constitution, agreements and manuals Staff representative/Compensation officer's daily files Case files Operational files. Series three is arranged in two subseries: Interests Personal affairs and memoirs.