Northern Pacific Engineering Drawing: Detail of Plate Girder, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028601
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Plate Girder, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028598
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Plate Girder, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028597
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Plate Girder, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028602
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Plate Girder/Casting, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028599
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Plate Girder/Casting, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028600
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Details of Bents 1/2, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025698
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Erection Diagram, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028727
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Erection Diagram, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025697
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Falsework, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028720
• Item
• undated

Part of Timothy Miller Collection