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.

An umbrella organization for Finnish male choruses in North America.

The records relate to the organization's administration and finances, and to major events including nine performing tours of Finland and performances in North America.

Member choirs have included:
Chicago: Sibelius Male Chorus
Detroit: Finlandia Male Chorus
Florida: Male Singers of Florida
Los Angeles: Finnish Male Chorus
New York: New Yorkin Laulumiehet
Sault Ste Marie: Sault Finnish Male Chorus "Kaleva"
Sudbury: Sudburyn Laulumiehet
Thunder Bay: Mieskuoro Otava Male Choir
Toronto: Toronton Mieslaulajat
Vancouver: Vancouverin Mieslaulajat

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 correspondence, receipts, newspaper clippings, and several articles of the Canadan Uutiset, a Finnish-language newspaper based in Thunder Bay.

A vast and varied collection of records documenting the experiences of Finnish immigrants to Northwestern Ontario. Includes correspondence, manuscripts, photographs, interviews, published material, and ephemera. The photograph collection is extensive and covers a wide range of subjects.

The records are arranged into the following series:
A - Bay Street Project
B - Finnpraxis Project
C - Collections
D - Photographs
E - Miscellaneous
F - Finnish Experience