How many ALCO S3s survive. One I know is BRT 0409 in Boston.
One in New York state:
Tonawanda Coke No. 1976
at Tonawanda Coke plant, Tonawanda, NY (Buffalo area)
nee Maine Central Alco S3 No. 961.
arrived at Tonawanda Coke sometime before 1978.
http://gold.mylargescale.com/scottychaos/ny-alcos/
Scot