The collection contains records of Clyde Iron Company (1889), Northwestern Supply Company (1899), Northwestern Manufacturing Company (1899), Clyde Iron Works, Cleveland Duluth Company, Inc. (1920), Willamette Clyde Company (Oregon, 1923), Cleveland Duluth Holding Company of Minnesota (1926) and Clyde Iron Works Sales Company (renamed Clyde Sales Company) the sole distributor for Clyde Iron Works. There are no records of the Clyde Equipment Company.

The Duluth Board of Trade records include information about the functioning of the Board of Trade from its inception in 1881 to the dissolution of the company in 1972.

The collection contains articles of incorporation, by-laws, minutes, annual reports, budgets, policies, newsletters, newspaper clippings scrapbooks, photographs, Chisholm family genealogy and photographs, museum programming materials and photographs, American Alliance of Museums museum assessment, strategic plan.

The collection contains correspondence, bulletins, publications, news clippings, scrapbooks, photographs, posters, personnel lists, and other reference materials from the war activities of the organization. The records were collected from a variety of sources, such as the Duluth Public Library, the War History Division of the Duluth Civilian Defense Council, and individuals. Parts of the collection, therefore, are sporadic and incomplete.

The collection contains minutes, financial books, annual reports, publications, maps, miscellaneous correspondence, news clippings, photographs, timetables, and microfilmed scrapbooks. Financial records represent the largest portion of records, and there is a significant lack of executive records.

The collection contains corporate and financial records and minutes; job site and construction records; publicity records; and oversized photos and blueprints.

The collection contains constitution and by-laws; minutes, 1898-1930; scrapbooks, 1898-1982; yearbooks, 1910-1912; pamphlets and serials; membership directories; conference programs; and organizational histories. Some of the scrapbooks include photographs.

The collection contains minutes, contracts, correspondence, color snapshot photographs of the two days of events in West Duluth and at Bayfront Park, and a copy of the West Duluth Centennial Memory Book: West Duluth Duluth United for a Century 1894-1994.