Sorry if I mentioned this before, but here's a good site listing all known railways in Peru. This is a largely unexplored country, that leaves Americans wondering if ex-Sumpter Valley, White Pass & Yukon and Colorado & Southern steam locomotives might still exist down there. There were also a couple of standard gauge American-built 4-4-0s stored in an unroofed enginehouse at Puerto Eten. This site doesn't have the answers, but provides a good overview of the country's railways anyway.

http://home.fuse.net/PeruvianRails/Peruvian%20Rails.htm
ryarger@rypn.org