The Sims family collection encompasses records of the Sims and Cook, Davidson and Garden families retained by members of the two family branches that came together when Harvey James Sims and Florence Katherine Roos married in 1902. Their Sims and Davidson forbears were equally significant in the history of the Waterloo-Wellington area and in the growth and development of agriculture, education, business and government. Harvey James Sims and Florence Katherine Roos were deeply involved in their local community of Berlin, (later Kitchener) Ontario and their own records contain significant additions to our knowledge of local personalities and affairs. Harvey was a childhood and lifelong friend of William Lyon Mackenzie King; they wrote and visited each other regularly. King's sister Bella was also a close friend of Florence from school days on.

Fonds consists of ephemera relating to the unionization of furniture makers and woodworkers in the Kitchener, Stratford, and Woodstock area. Includes a mock liberty bond for the defence of workers arrested protesting, a card promoting socialist industrial unionism, a handbill outlining union desires, a letter from Canada Furniture Manufacturers regarding an adjustment to pay rates, a handbill encouraging furniture workers to unionize, and a photocopy of a letter to Herman Kreuger.