Whistle/Horn Sound Origins

[STBoyII]

I doubt there's a thread of this, so I figured i'd start one. If you've found an origin video of a whistle or horn sound for TS, post it here!

Here is the Cab Forward whistle origin: https://youtu.be/SgK8_BL9fe4?t=100

And Smokebox's Consolidation: https://youtu.be/TU7DNkZtG1I?t=47

Post any others here! I'm curious to know more, including the UP FEF-3 (Mike confirmed to me it was a YT video, but he forgets specifically) and others.