This series contains over 20 books on Swedish culture, history, and emigration and immigration to North America. Some of the books are in English while the others are in Swedish. A book index is available.

The subseries contains newspaper and magazine clippings, index card notes by Seaholm on Swedish Canadians and Canadian history, photographs of Swedish Canadians, a handmade manuscript compiled by Seaholm of a chronology of Swedish Canadian contributions to the development of British Columbia, and a miscellaneous collection of stories on immigration in America. Clippings are in English and Swedish.

The series contains clippings from newspaper and magazine articles that Seaholm found relevant to his research. Articles are in both English and in Swedish.

This series consists of approximately 500 prints and photos of immigrants and their institutions in U.S. and Canada. There is an index list with names, when available, that accompanies this series.

This series contains copies of the Swedish Pioneer Historical Quarterly from, 1967 to approximately 1976. There is an index included with this series.

This subseries contains newspaper clippings and issues, meeting minutes, and Seaholm's research notes about the Swedish Press, a newspaper based out of Vancouver, but published in Swedish. Subseries also contains microfilmed versions of issues of the Swedish Press (some under its Swedish title Svenska Pressen) from 1929 to 1956.

This series contains copies of the periodical The Bridge, which is in English and printed in Sweden. The issues contain feature articles regarding Swedish immigration to Canada and the United States that Seaholm used in his research.

The series contains photographs and research material towards Seaholm's proposed book, <i>They Left Something Behind</i>. The slides contain information on the history and institutions of the Swedish immigrants to the United States and Canada. The slides are accompanied with a manual which provide context and other information about the slides.