Railroad Archives Online
- 宗卷D0237A - Great Northern Railway Historical Society Cascade Division Collection
- 系列003 - Great Northern Railway Company (U.S.)
- 次系列013 - Operations documents
- 005 - Railroad Accident Reports
- 物件GNRHSCD324 - Interstate Commerce Commission Report on a Fatal Accident at the Foss River Bridge, Tonga, Washington on March 7, 1945