Warbonnet, yes, a fair amount of equipment from the U.S. was sold to the National Railways of Mexico, some years back. Even some equipment from from the 20th Century Limited went to Mexico.
If you are seriously interested, I have books, dated about 1980 or so, which show the disposition of every pre-Amtrak streamlined passenger car in the U..S up to that time. . If you are interested, I will be glad l to supply you with the names and authors. I have no idea of if the books are still in print.
On the whole subject of disposition of passenger cars, these are some of the possibilities, 1. scrap metal, 2. sold to Mexico, 3. sold to operators of excursion railroads, steam engine excursions, dinner trains, etc 4. sold to museums(whether railroad museums or otherwise) or such display purposes 5, used as work cars for track layers andsuch, 6. the better ones sold to Amtrak, 6. sold to Canada(a few) .7.sold to private collectors as private cars or whaever,8.sold to commuter railroads (massively stripped down of amenities, of course),9,a few to the state of Alaska and no doubt there are other dispositions which I do not now remember or never knew.
Of course, before Amtrak came into existence, quite a few cars were sold around from one railroad(in the U.S.) to another, through the years. the whole subject is quite fascinating.
The books I have only date it up to a certain point. no telling what may have happened more recently with some of them.
