Northern Pacific Engineering Drawing: Top of Bottom Lateral, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB016417
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1958

• US WaBuPNRA D0027-004-009-008-001-BB016411
• Item
• 1958

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1958

• US WaBuPNRA D0027-004-009-008-001-BB016410
• Item
• 1958

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1938

• US WaBuPNRA D0027-004-009-008-001-BB014381
• Item
• 1938

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1938

• US WaBuPNRA D0027-004-009-008-001-BB014380
• Item
• 1938

Part of Timothy Miller Collection

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

• US WaBuPNRA D0027-004-009-008-001-BB014386
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Reinforcement Top Chord/Floor Beam, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB016419
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Reinforce Top Chord, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB014382
• Item
• undated

Part of Timothy Miller Collection

Northern Pacific Engineering Drawing: Reinforce Floor Beams, Bridge 55 - Flathead River, West of Perma, Montana, undated

• US WaBuPNRA D0027-004-009-008-001-BB014383
• Item
• undated

Part of Timothy Miller Collection