Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 369 more...
- ItemBB014610 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014611 - Northern Pacific Engineering Drawing: Maps and Profiles, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014612 - Northern Pacific Engineering Drawing: Plan/Detail Pier/Abutment, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014613 - Northern Pacific Engineering Drawing: Detail Floor Frame/Tie Plan, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014614 - Northern Pacific Engineering Drawing: Detail End/Intermediate Cross Frame, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014615 - Northern Pacific Engineering Drawing: Detail of Deck Plate Girder (DPG), Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014616 - Northern Pacific Engineering Drawing: Repair to Lateral Brace, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014617 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 42 (65), West of Avon, Montana, undated
- ItemBB014618 - Northern Pacific Engineering Drawing: General Plan, Bridge 41 (63), West of Avon, Montana, 1901
- 7350 more...