Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 844 more...
- ItemBB021935 - Great Northern Engineering Drawing: Deck Plan, Bridge 501 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021936 - Great Northern Engineering Drawing: Masonry Plan, Bridge 501 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021937 - Great Northern Engineering Drawing: General Plan, Bridge 498 - Otter Creek, North of Blythe, Montana, 1952
- ItemBB021938 - Great Northern Engineering Drawing: Deck Plan, Bridge 498 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021939 - Great Northern Engineering Drawing: Masonry Plan, Bridge 498 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021940 - Great Northern Engineering Drawing: Shop Plan - Standard Beam Span, Bridge 498 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021941 - Great Northern Engineering Drawing: General Plan, Bridge 496 - Otter Creek, North of Blythe, Montana, 1952
- ItemBB021942 - Great Northern Engineering Drawing: Masonry Plan, Bridge 496 - Otter Creek, North of Blythe, Montana, undated
- ItemBB021943 - Great Northern Engineering Drawing: Deck Plan, Bridge 496 - Otter Creek, North of Blythe, Montana, undated
- 3148 more...