I own an old VHS tape that's about the early 90's snow-removing operation that the OY took part in. While that subject is interesting and amazing to see, the thing that I really remember is a certain whistle that can be heard in one of the opening scenes on a K-36 pulling into Cumbres Pass. It was a high-pitched, shrieking thing, and I have yet to hear another whistle that had such a sound. Is there anyone who can tell me what whistle it was, and if the C&TS still has it? I haven't heard it once during my many visits throughout my lifetime.