Railroad Archives Online
- FondoD0173 - Hal Will Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Sottoserie014 - Photographs
- 002 - Railroad Employees
- Unità documentariaMOHAI.90.24.26 - Great Northern Employee at Interbay, Washington in 1947.
- Unità documentariaMOHAI.90.24.27 - Great Northern Employee at Interbay, Washington in 1947.
- Unità documentariaMOHAI.90.24.28 - Great Northern Employee at Interbay, Washington in 1947.
- Unità documentariaMOHAI.90.24.29 - Great Northern Employee at Interbay, Washington in 1947.
- Unità documentariaMOHAI.90.24.30 - Great Northern Employee at Interbay, Washington in 1947.
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