Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3010 - Miscellaneous Structures
- Itemimg1118 - Great Northern Snow Shed at Tye, Washington, 1982
- Itemimg1119 - Great Northern Snow Shed at Tye, Washington, 1968
- Itemimg1149 - Great Northern Lunch Room at Wenatchee, Washington, 1999
- Itemimg1150 - Great Northern Lunch Room at Wenatchee, Washington, 1999
- Itemimg1151 - Great Northern Lunch Room at Wenatchee, Washington, 1987
- Itemimg1152 - Great Northern Lunch Room at Wenatchee, Washington, 1987
- Itemimg1164 - Great Northern Office Building at Great Falls, Montana, 1990
- Itemimg1165 - Great Northern Office Building at Great Falls, Montana, 1990
- Itemimg1166 - Great Northern Office Building at Great Falls, Montana, 1990