Northern Pacific Engineering Drawing: Detail of Plate Girder, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025693
• Item
• undated

Part of Timothy Miller Collection

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

• US WaBuPNRA D0027-004-009-008-001-BB028740
• Item
• undated

Part of Timothy Miller Collection

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

• US WaBuPNRA D0027-004-009-008-001-BB028741
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Longitudinal Brace, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028595
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Longitudinal Brace, Bridge 52, West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028596
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Longitudinal Brace, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025706
• Item
• undated

Part of Timothy Miller Collection

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

• US WaBuPNRA D0027-004-009-008-001-BB028738
• Item
• undated

Part of Timothy Miller Collection

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

• US WaBuPNRA D0027-004-009-008-001-BB028739
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Guard Rails, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025695
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Cross Frame, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028481
• Item
• undated

Part of Timothy Miller Collection