Wikipedia 10K Redux

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

Atlas_Shrugged|Section112

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

Dagny Taggart is riding the Taggart Comet back to New York after inspecting the Rio Norte Line. She hears a Brakeman whistling an unpublished piece from her favorite composer, Richard Halley, but the brakeman refuses to acknowledge this or say where he heard it.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 Owen Kellogg 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

Owen Kellogg - Mentioned.

Passenger Number 1 - First and only appearance.

Passenger Number 2 - First and only appearance.

Richard Halley - Mentioned.

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