BTW, recitation of the account regarding the 611 whistle.
(the book) Norfolk & Western Passenger Service 1946-1971 by William E. Warden
In reference to the last run of the Pocahontas on May 1, 1971 on page 13:
"Best of all, instead of the 759's somewhat shrill whistle, the engine had been outfitted with the mellow steamboat whistle of J-class 4-8-4 No. 611, then residing in the Roanoke Transportation Museum".
BTW, from what I can tell, Lionel did do a great job with the sound file on this latest engine. And the whistle steam is very nice.