Haha that last pic of the MILW was definitely on the Pacific Extension somewhere. Good old electrified Milwaukee Road in MT, ID, & WA. Too bad they didn't put a siren on a boxcab or a Little Joe. That would've been pure awesome.
UP has always had a thing with the biggest and most badass...they have the biggest diesels and the biggest steam. And they outdid the others by putting a siren on the biggest and baddest.
I'm surprised no one has posted the Billups crossing signal that used to be in Granada, MS: http://en.m.wikipedia.org/wiki/Billups_ ... ing_Signal