Railroad Archives Online
- CollectionD0255 - Casey Adams Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3009 - Electric Locomotives
- ItemAdams GN - 069 R - Great Northern Electric Locomotive 5010 at Skykomish, Washington in 1956
- ItemAdams GN - 070 R - Great Northern Electric Locomotive 5014 at Wenatchee, Washington in 1946
- ItemAdams GN - 071 R - Great Northern Electric Locomotive 5014 at Skykomish, Washington in 1956
- ItemAdams GN - 072 R - Great Northern Electric Locomotive 5019 at Skykomish, Washington in 1956
- ItemAdams GN - 073 R - Great Northern Electric Locomotive 5019 at Skykomish, Washington in 1953
- ItemCRAGNMISC013 - Great Northern Railroad Electric Locomotive 701 at Spokane Shops in 1935
- ItemCRAGNMISC022 - Great Northern Railroad Electric Locomotive 5003-B at The Opening of the New Cascade Tunnel in 1929
- 2 more...