Northern Pacific Engineering Drawing: Detail of Intermediate Post, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB016413
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Chord/Post/Strut, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB016414
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Detail of Brackets, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB014385
• Item
• undated

Part of Timothy Miller Collection