Northern Pacific Engineering Drawing: Retaining Wall West End, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020034
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Retaining Wall West End, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020035
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Miscellaneous Details, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020033
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Extension Tunnel Line, Tunnel Number 6, Near Quartz, Montana, 1951

• US WaBuPNRA D0027-004-009-008-008-BB020037
• Item
• 1951

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Extension General Plan, Tunnel Number 6, Near Quartz, Montana, 1951

• US WaBuPNRA D0027-004-009-008-008-BB020036
• Item
• 1951

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Details Retaining Wall, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020032
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Details of Tunnel Line, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020029
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Details - Reinforcement Schedule, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020030
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Details - Reinforcement Schedule, Tunnel Number 6, Near Quartz, Montana, undated

• US WaBuPNRA D0027-004-009-008-008-BB020031
• Item
• undated

Part of Timothy Miller Collection