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Tunnels
US WaBuPNRA D0063-007-014-003-007 · Subseries Level 3
Part of Walter W. Ainsworth Collection

Still photographs of railroad structures for the passage of trains underground.
Tunnels
US WaBuPNRA D0059-003-014-003-007 · Subseries Level 3 · 1900
Part of David Emerson Collection

Still photographs of railroad structures for the passage of trains underground.
Tunnels
US WaBuPNRA D0027-007-009-008-008 · Subseries Level 3 · undated
Part of Timothy Miller Collection

Engineering drawings of structurse designed to allow passage of trains underground.
Tunnels
US WaBuPNRA D0063-004-014-003-007 · Subseries Level 3
Part of Walter W. Ainsworth Collection

The Tunnels portion of Northern Pacific Railroad photographs of the Walter W. Ainsworth Collection includes photographs of railroad tunnels in the Pacific Northwest.
Tunnels
US WaBuPNRA D0063-002-014-003-007 · Subseries Level 3 · undated
Part of Walter W. Ainsworth Collection

Still photographs of railroad structures for the passage of trains underground.
Tunnels
US WaBuPNRA D0288-003-014-003-007 · Subseries Level 3 · undated
Part of Terence Wahl Collection

Still photographs of railroad structures for the passage of trains underground.
Tunnels
US WaBuPNRA D0011-006-014-003-007 · Subseries Level 3 · August 27, 1975
Part of James M. Fredrickson Collection

Still photographs of railroad structures for the passage of trains underground.