Burlington Northern SD40-2 Number 6799, built November 1977; SD40-2 Number 6704, built December 1974; SD40-2 Number 6711, built February 1976; SD40-2, number unknown; passing Hoffman Avenue interlocking at Dayton's Bluff, Minnesota with blue-ended bathtub coal gondolas on June 4, 1981. Photo by Al Christianson.
Elements area
Taxonomy
Code
Scope note(s)
At Pacific Northwest Railroad Archive, still photographs of railroad signal equipment.
Source note(s)
LC Subject Authority Heading: Railroads--Signaling http://id.loc.gov/authorities/subjects/sh85111029
Display note(s)
Hierarchical terms
Railroad--Signaling
Railroad--Signaling
Equivalent terms
Railroad--Signaling
UF Signals