Railroad Archives Online
- FondsD0063 - Walter W. Ainsworth Collection
- Seri003 - Great Northern Railway Company (U.S.)
- Subseri014 - Photographs
- 006 - People--Non-railroad
- ItemJATGSelfPortrait - Frequent Great Northern Railway photographer James Turner in Washington State, undated.
- ItemJATGShowShed_Track - Frequent Great Northern Railway photographer James Turner in Washington State, undated.
- ItemJATGTracksHorses - Unknown rider and pack horses walking along Great Northern Railway track in Washington State, undated.