Great Northern Engineering Drawing: Cofferdam West End, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024879
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Collar Support, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024917
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Deck Plan, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024913
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Design Stresses, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024888
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Design Stresses, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024889
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Electrical Conduit Layout, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB022013
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Fender Details, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024886
• Item
• undated

Part of Timothy Miller Collection

Great Northern Engineering Drawing: Fender Details, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated

• US WaBuPNRA D0027-003-009-008-001-BB024885
• Item
• undated

Part of Timothy Miller Collection