File consists of one letter from Christian Enslin, bookseller and bookbinder, Waterloo, Ontario to Fredrick Heinitsch, M.D., Lancaster, Pennsylvania requesting the right to "Mother Drops", a medicine created by Dr. Heinitsch on which he held the patent.
The letter also includes information on bookbinding and printing practices in Upper Canada and makes reference to local figures such as Benjamin Eby, Bishop of the Mennonites.

Correspondence and notes between members of the Dumont Press, the Communist Party of Canada (Marxist–Leninist) (CPC M-L), and the Anti Imperial Alliance (AIA) of the University of Waterloo. The correspondence outlines a political disagreement between the left wing politics of those who worked at the press and the CPC M-L and AIA. The Dumont Press had been allowing the CPC M-L and the AIA to use the press to print their materials, but indicated that they had become uncomfortable with the division between the groups. Part of this disagreement was also what was happening with the Chevron, the student newspaper of the University of Waterloo, at the time. The Dumont Press printed the Chevron and indicated that they were finding it difficult to do their work under the political perspective of the AIA, which was the dominant voice of the Chevron at the time. Also present is one item of correspondence from Dr. Henry Crapo, professor in the Faculty of Mathematics, at the University of Waterloo. Dr. Crapo was requesting back the money that he had loaned the Dumont Press due to the press' political disagreements with the CPC M-L, the AIA and the Canada-China Friendship Society.

The majority of the archives of the Concordia Club were destroyed either as a result of the ransacking of the club by the 118th Batallion in 1916, or as a result of the fire of Nov. 17, 1971. As a result the earliest records of Concordia have largely been lost forever. A very small number of items can be traced back to the Concordia Male Choir (1873-1914). These take the form of two items of correspondence, programs for the "Sängerfests", clippings, and photographs. A small number of archival records also can be found which belonged to the "Deutscher Club, Kitchener" (1925-1930), and include a set of house rules, letters patent, and photographs. Some records from the 1930s have also been preserved to this day, and include artifacts, clippings, legal documents, a membership list, photographs, and programs of events. However, the majority of the materials date from the 1950s onwards. These materials document the history of the Concordia Club since the 1950s, and include artifacts, audiovisual material, clippings, correspondence, ephemera, financial records, legal documents, membership records, minutes of meetings, photographs, publications, and scrapbooks.

Fonds consists of 28 items of correspondence between David Shannon Bowlby and his family.

Consists of one holograph letter from John Galt addressed to "Croker." The letter requests that Croker publish the enclosed items in his magazine if they are not too late reaching him.

Fonds consists of ten letters written by John Woelfle to his brother Edward in 1895. The letters describe the travels and activities of the writer and express interest and concern about the activities and lifestyle of the recipient and other members of the family.

One holograph letter, written from the trenches in France during the First World War. Ross Hamilton is sending Miss Henstridge a book he has found in a ruined house, and is asking for news of his old school, Kitchener Collegiate Institute.

Primarily correspondence from Orpheus Moyer Schantz from 1881 to 1951.

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.