Railroad Archives Online
- CollectionE0477 - BNSF Maps, Drawings and Records Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 40 more...
- ItemEBP4131 - Great Northern Technical Drawing, Superior (Allouez), Wisconsin, 1905
- ItemEBP4132 - Great Northern Technical Drawing, Superior (Allouez), Wisconsin, 1905
- ItemEBP4133 - Great Northern Technical Drawing, Superior (Allouez), Wisconsin, 1905
- ItemEBP4134 - Great Northern Technical Drawing, Superior (Allouez), Wisconsin, 1905
- ItemEBP4615 - Wenatchee Water Power Company Bridge Technical Drawing, undated