Railroad Archives Online
- FondoE0322 - Tryone Johnsen Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Sottoserie017 - Other Materials(Bozza)
- Unità documentariaRefrigerator Car Fleets - Western Fruit Express, Fruit Growers Express, Burlington Refrigerator Express
- Unità documentariaWFE-FGE-BRE page 01 - WFE-FGE-BRE page 01
- Unità documentariaWFE-FGE-BRE page 02 - WFE-FGE-BRE page 02
- Unità documentariaWFE-FGE-BRE page 03 - WFE-FGE-BRE page 03