@Hot Water posted:OK, problem solved. I just looked at my Class A book, by Ed King, and the whistle is on the Fireman's side of the steam dome, right behind the safety valves. Thus, the whistle is pretty much, "adjacent to the safety valves", being about a foot behind them. Lionel got it rights far as the location, but the sound is certainly NOT an N&W Hooter!
Sorry, jumped the gun! Didn't catch your reply before I posted mine.