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.

The fonds consists of land transactions, mortgages, declarations, and power of attorney documents. Some seem to have been retained as they pertain to personal or family business of members of the firm, such as documents relating to the estate of Christian Kumpf, whose daughter married A.B. McBride.

Some documents relate to well known names in the history of the area, such as David Kuntz of Kuntz Breweries and John Hoffman, for whom a survey of Waterloo was done in 1855, Thomas Hilliard, Charles Noecker, Ford S. Kumpf, etc.

Evidence of printing activity is present in legal forms printed by local booksellers and stationers for the firm. The documents contain evidence of trades and occupations of the time, including marble cutter, tailor, hotel keeper, farmer, woolen mill employee, button turner, shoe merchant, cabinet maker, tobbaconist, cigar box manufaturer, brewer, pumpmaker, telephone agent, etc. Also interesting to note is the shift to the use of a typewriter and the appearance of a female employee described as a "stenographer." Interesting also is the relative level of literacy evident in the signatures of individuals, particularly those of husbands and wives, many of whom are represented only by their "mark."

Accrual consists of material relating to the activities of the Waterloo law firm Haney, Haney, Kendall & Melville under various former names (including MacGachen & Colquhoun, and Colquhoun & McBride), as well as material relating to the family history of some of the firm's members.

Includes mostly deeds of land, mortgages, declarations, and correspondence; a will, a marriage contract, a birth registration, an insurance policy, a grant of burial lot, and other documents are also present. Accrual also contains two auction sale posters. Most of the documents were created in the local area, and some were created in England and Scotland.

Several files contain deeds and mortgages for Lot 9 and part of Lot 10 in the village of St. Jacobs, showing transfer in ownership from Levi Cress to Christian Henrich in 1884, through several other parties, to John L. Horst and his wife Selina Horst in 1953. Several files also contain material relating to a Fred Kempf and his property in Elmira. Some of the documents seem to have been retained for their relation to personal or family business of members of the firm.

Fonds consists of textual materials created or accumulated by members of the Ratz family, primarily for the assessment and disbursement of the John Ratz and Ratz Brothers business estates. This include correspondence, tax records, legal documents, deeds of land and receipts.