Northern Pacific Engineering Drawing: Detail of Bents 9, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025705
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 9, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028736
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 3/5, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028730
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 3/5, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028729
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 3/4, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025699
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 11, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028737
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bents 1/2, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028728
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bent 8, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025704
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bent 8, Bridge 51 (50), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB028735
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Bent 7, Bridge 52 (54), West of Spire Rock, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB025703
• Item
• undated

Part of Timothy Miller Collection