The fonds documents the activities of Julien Paquin, S.J. It contains information on the presence of Father Paquin within different missions in Northern Ontario and concerning his involvement in the First World War. It also includes his correspondence. The fonds is comprised of five series: correspondence, military service, missions, spiritual notes and reflections and Collège Saint-Boniface. The documents part of the fonds range from 1896 to [1935].

This fonds provides information on the history of the Fort William Mission and the surrounding area. It contains historical brochures and diaries about the Fort William Mission. It documents the missionary activities of the region. It also provides an account of Jesuit activities with the Indigenous communities in the area, including marriage licenses, lease agreements, and various contracts.

The fonds contains some correspondence of Nicolas Fremiot, S.J., detailing his activities in the region, as well as other correspondence by Jesuit priests involved in the Northern Ontario missions.