Wikipedia 10K Redux

Reconstructed by Reagle from Starling archive; see blog post for context.

AtlasShrugged|SectioN112

Atlas Shrugged, Part 1, Chapter 1, section 2:

Dagny Taggart is riding the TaggartComet back to NewYork after inspecting the RioNorteLine. She hears a Brakeman whistling an unpublished piece from her favorite composer, RichardHalley, but the brakeman refuses to acknowledge this or say where he heard it. After falling asleep and waking up, Dagny discovers the train has come to a stop at a siding. She finds the train crew passively waiting instructions, and gives them orders on how to proceed. Faced with this incompetence, she decides to promote OwenKellogg to superintendent of the Ohio Division.

Taggart Comet, stalled between Cleveland and New York.

Brakeman

ConductoR - First and only appearance.

EngineeR - First and only appearance.

Dagny Taggart

OwenKellogg - Mentioned.

PassengerNumber1 - First and only appearance.

PassengerNumber2 - First and only appearance.

RichardHalley - Mentioned.

What was the Brakeman whistling? Did Halley write a Fifth Concerto?