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 November 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 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.

Collection consists of 169 19th century American photographs. Included are 115 carte-de-visites, 40 cabinet portraits, 2 albums, 11 miscellaneous photographs and 1 envelope of miscellaneous business and greeting cards.

Most are albumen type photographs depicting various people including infants, children, and adults. The photographs come from various studios across the United States though the majority come from studios in New York, Vermont, Massachusetts, New Hampshire, and Illinois. The photographs, since rehoused, were originally housed in two albums decorated with an intricate relief on the cover and a metal clasp lock.

Broadside of a poem delivered by Lizzie Doten on September 23, 1866 at Library Hall, Chelsea, titled "Reconstruction." The poem addresses then President Andrew Johnson and criticizes his approach to the South at the end of the American Civil War. She believed that Johnson was too lenient on the South and allowed too much wealth and influence to remain with Southern Confederate politicians. She also criticizes Johnson for being unconcerned with Black suffrage or the rights of Black soldiers who fought for the Union. She ends her poem with the rallying cry "...let the ballot finish what the bayonet has begun."

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.

One scrapbook kept by an unknown theatre goer. The book is specially made for theatre performances and features in index of the plays, and a two page spread devoted to each play. The left hand side of the page allows for written comments on the title, date and location of the play as well as impressions, and criticisms of the actors and performance. The right hand side of the page is intended to be used to paste in the playbill. In many entries newspaper clippings about the performance are also present. All of the productions were held at the Castle Square Theatre in Boston by the Boston Stage Society in 1904 and 1905. There are records for 80 plays. Some of the playbills also include advertisements.

Photograph album containing photographs and other materials related to the Zagar family with an emphasis on their youngest daughter Margaret Ann.

Photographs and ephemera in album cover the lives of the Zagar family from the early 1930s to the early 1950s. First sheets include photographs of the grandmothers, parents (Stephan and Wilma), twin oldest daughters (Rosalyn and Marilyn Ann), and youngest daughter as a baby (Margaret Ann). Rest of sheets focus on Margaret Ann and her development from early childhood to adulthood after having contracted Polio as an infant. Photographs include family pictures and celebrations, class photographs at the Gompers School for the Handicapped (located at South State St. and 123rd, Chicago), photographs of Margaret Ann's development at different stages, and photographs of family friends. Album also contains religious ephemera, school ephemera related to Gompers School events, and a newspaper clipping related to a function at Gompers School.