Railroad Archives Online
- CollectionD0153 - Doug Wingfield Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3009 - Railroads - Servicing facilities
- ItemWingfield.143 - Great Northern Water Column at Whitefish, Montana, 1970