Institute on Lake Superior Geology. Houghton, Michigan. May 15-18, 2024.

Institute on Lake Superior Geology. Mountain Iron, Minnesota. May 14-17, 2025.

Institute on Lake Superior Geology. Thunder Bay, Ontario. May 2-8, 1977.

Institute on Lake Superior Geology. Virtual meeting. May 11, 14, 18, 21, 2021.

Institute on Lake Superior Geology. Sudbury, Ontario. May 10-11, 2022.

International Ni-Cu Symposium. August 6-8th 2024, Lakehead University, Thunder Bay, Canada. Abstracts.

Letter of congratulations from the I.O.D.E. to Impi Virtanen on becoming a Canadian citizen. December 2, 1959.

Photograph of Red Sucker Tunnel, a CPR tunnel on the North Shore of Lake Superior at Red Sucker Cove. Probably 1884-1885.

Booklet, "Historical Facts: Grain Elevator Construction and Shipping, Lakehead Harbour, 1883-1964," by J.E. Young, Chairman of the Lakehead Harbour Commission, February 1965.

Silver Islet in winter, three men and dogsled, circa 1890