Hi Doug,
Sorry I couldn't spend more time on the list last night - I was bushed.
Re cars 5510/5610 I must admit I'm a tad confused. Taking Stock lists 5510 at Knotts [p215]. Dave identifies 5510 at Chama and has a photograph to prove it. Seems like I goofed, sorry, my mistake.
On checking my trip notebook I have no record of car 5510 being in Chama or does the book - The Cumbres & Toltec Scenic Railroad Preservation Study, published in 1980. However, if it is in Chama it clearly isn't in Knotts, so we can eliminate the car from this debate.
Re confusion about these two car numbers I guess the only way to be 100% certain is to get inside both cars and take a look. Would you be able to do that on the Montrose car on your next visit? Maybe someone visiting Chama could take a look at the other car - seems like this one is very open to view.
Will get back to catch up with you on other matters off-list.
Regards,
Vic