The fonds consists of notes, correspondence, bird observation data, and the natural history journals of Dr. Allen. The fonds contains the following series:
-Dr. A.E. Allen Bird Observations
-Natural History Notes of A.E. Allen
-Dr. A.E. Allen Ephemera

The fonds consists of minutes, membership lists, newsletters, correspondence, a photograph and four negatives, bird census data, and other records associated with the activities of the club. The fonds consists of the following series:

1. Constitution and Bylaws
2. Minutes
3. Treasurer
4. Club History
5. Membership Lists
6. Newsletter
7. Research and Information
8. Lobbying
9. Conferences
10. 50th Anniversary
11. Ephemera

St. Urho's Day is celebrated on March 16 each year in Thunder Bay, as well as in many Finnish-Canadian and Finnish-American Communities. These records relate to both the wider holiday and to its celebration in Thunder Bay.

St. Urho is a [fictional] Finnish saint, renowned for driving the grasshoppers (or, in early legends, frogs) out of the Finnish vineyards. The story of St. Urho originated in Minnesota in the 1950s, and it has over time become a popular aspect of Finnish-American and Finnish-Canadian culture. People wear purple and green to participate in parades, celebrations, and performances.

Records relating to Steve Mantis's work in injured workers' rights and advocacy, including with: Thunder Bay District Injured Workers Support Group; Ontario Network of Injured Workers Groups; and the Worker's Compensation Board (WSIB). Records of research projects. New Directions Speakers' School. Poverty reduction initiatives. Bay Credit Union Social Responsibility Committee. Run for MPP in 2011 Ontario election as NDP candidate for Thunder Bay-Superior North.

The Lakehead Social History Institute is a partnership between historical researchers at Lakehead University and members of the Thunder Bay community. Active since 1997, the Institute supports and promotes historical research in the Northwestern Ontario region. The Institute facilitates research, trains new researchers, disseminates information about historical resources, conducts workshops, assists educational and community organizations, supports historical publications, and encourages local groups to preserve archival materials.

The fonds includes meeting minutes, correspondence, research projects, funding applications, workshop materials, membership lists, and publications. It also contains records of collaborations with educational institutions and community organizations, reflecting the Institute’s commitment to advancing historical research and public engagement.

Card catalogue from the Suomi Koti library.

Suomi Koti of Thunder Bay is a seniors' residence in Thunder Bay. The organization was founded in 1984; the building, consisting of 60 apartment units, was opened in 1988. Suomi Koti was developed to meet the needs of Finnish-Canadian seniors

The library was built from donations and purchases by residents over the years. It held titles in Finnish and in English; the Finnish-language materials were often published in and brought from Finland and were difficult to access through Canadian libraries or booksellers. This library reflected a body of reading material of Finnish-speaking people in Thunder Bay in the later part of the twentieth century.

In 2025, the library collections were weeded significantly to make room for new furniture and better meet the needs of current residents. Some titles were donated to Lakehead University Library at this time. The Finnish-language card catalogue has been acquired by the Archives to preserve a record of the library's former collections and how it reflected the culture of its users.

The 1978 Young Canada Works "Herstory" project's aim was to compile material on women pioneers in Northwestern Ontario with the intention of using the material to write a book on the same theme. The hope was to illustrate the lives and achievements of Northwestern Ontario women and stimulate further interest in women's contribution to Northwestern Ontario history.

The material here was collected through interviews with over 100 women around Northwestern Ontario. Records include 70 audio cassettes with taped interviews, recorded largely in 1975, and mostly accompanied by transcripts. The records also contain research notes, news articles and photographs, related to Northwestern Ontario communities and fields of activity relating to women's history. They also include correspondence, reports, financial and other administrative records of the project leaders and workers.

The project work did not continue through to the writing of a book. These records were held but largely untouched until a project review in 1993.

In the Decade Council's 1993 report, three objectives were listed: To validate women’s contributions within the context of NWO; to restore and catalogue the records of women’s lives in NWO; and to create a resource that would provide a perspective on women’s Herstory in NWO. A detailed summary of those interviewed, their location and details on whether there is a transcript or release form were created. This report concluded with multiple recommendations with the aim of preserving the tapes and collected materials for eventual public use. This project was not continued, and the material was stored in various locations until its donation in 2024.