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Walter W. Ainsworth Collection
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Railroads--Equipment and Supplies
US WaBuPNRA D0063-003-014-001 · Subseries Level 2 · circa 1946-1965
Part of Walter W. Ainsworth Collection

Still photographs of railroad rolling stock, typically locomotives, cars or maintenance of way support cars, and including railroad-owned buses and trucks.
Railroad mainline
US WaBuPNRA D0063-004-014-004-001 · Subseries Level 3
Part of Walter W. Ainsworth Collection

The Railroad mainline portion of Northern Pacific Railroad photographs of the Walter W. Ainsworth Collection includes photographs of railroad tracks, whether mainline, branchline or spur, and switches in the Pacific Northwest.
Bridges
US WaBuPNRA D0063-007-014-003-001 · Subseries Level 3 · undated
Part of Walter W. Ainsworth Collection

Photographs of bridges or trestles constructed by a railroad company, typically for the passage of railroad equipment.