Railroad Archives Online
- CollectionE0357 - Wade J Stevenson Collection
- Series002 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2014 - Landscape photography
- ItemGNRHS.55.02.50 - From Great Northern Mainline - View of Flooding in Washington State, undated
- ItemGNRHS.55.03.01 - From Great Northern Mainline - View of Flooding in Washington State, undated
- ItemGNRHS.55.03.02 - From Great Northern Mainline - View of Flooding in Washington State, undated
- ItemGNRHS.55.09.42 - Great Northern Mainline with Snow in the Mountains in Washington State, undated