The collection contains promotional materials, pamphlets, correspondence and lists from the Minnesota Committee of the American Historical Association Endowment.

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 collection consists of information gathered by William Coventry for his book Duluth's Age of Brownstone.

The collection contains correspondence, diaries, articles and addresses written by Darling, a subject file, personal financial materials, news clippings, photographs, and engineering plans.

The collection consists of the Commission's files incuding: application to the American Revolution Bicentennial Commission to become a bicentennial city, articles of incorporation and by-laws, financial records, correspondence, manuscripts on local history that were published in the book Duluth: Sketches of the Past, project files by month, Voyageurs Canoe Trip reenactment files, news clippings, brochures and programs, photographs, and proposals.

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 programs, correspondence, photographs, reference materials, three scrapbooks, news clippings, account sheets and one film.

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 administrative and crime records including Duluth, West Duluth, West End, and New Duluth offices/stations.

The collection consists of one poster, 1979, that depicts the home of Mr. D. Clint Prescott, and three walking tour guides, circa 1993, for downtown Duluth, Minnesota structures and East End residences.

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 collections contains research materials compiled to write Dr. Hudelson's book published by the University of Minnesota Press in 2006 titled By the Ore Docks: A Working People’s History of Duluth.

While surveying the collections of the NEMHC for the Minnesota Radicalism project, these items were identified as potentially useful for labor development research. Additional materials will be added to this collection as they are donated and appropriate.

The collection contains scrapbooks, news clippings, membership card file, reminiscences, financial and legal materials, photographs, and reference materials.

The collection contains printed materials issued "for" (Greater Duluth Committee, Emil S. Gustafson, chair and William McEwen, campaign manager) and "against" (The Committee of Two Thousand, W. B. Getchell, chair) a proposal to make traffic improvements at the Point of Rocks.

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.