Notes by RWF:

Any railroad's Observation Car is of course mostly enjoyed for its fine views of passing scenery.

Having a small library on board the train is welcome especially during night passages through dark and empty countryside, or for reference and entertainment anytime. The convenient barber, bath facilities, and clothes-pressing service which also are provided in the Northern Pacific Railway's Observation-Library Car are most useful on a multi-state trip when one wants to leave the train in good order for immediate business or society, before going to one's hotel or meeting one's hosts in the destination city.
  

  
Northern Pacific Railway
at Wikipedia
  

  
Transport at Troynovant
ships, trains, autos, aircraft, spacecraft