Thanks for the information. Early on, some people have been telling me it was from 611, when in fact I found out later on it really came from SLSF 1352. I know the common name for that it is a "Steamboat" whistle.
I'm not certain what kind of whistle SRI had put on 1225 that day. I knew 765 had two that day, the Lima 5-Chime and N&W 611's whistle mounted near the smoke stack.
