Railroad Archives Online
- CollectionE0357 - Wade J Stevenson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- ItemGNRHS.55.14.44 - Northern Pacific Steam Locomotive 5116 in Washington State, undated
- ItemGNRHS.55.29.49 - Northern Pacific Steam Locomotive 1676 at Cle Elum, Washington, undated
- ItemGNRHS.55.29.50 - Northern Pacific Steam Locomotives at Livingston, Montana, undated