Don't know if you've see this book at all, but if you hadn't it's worth a look:
http://www.bobhayden.com/catalog_02.phpSam has taken literally thousands of pictures of the Cumbres & Toltec line over its history. They're great, but one of the coolest things about this book is the aerial shots he and Bob Hayden got from a chartered helicopter.
Great photography of a great railroad.
Marty