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source: Scientific American July 25, 1896
Number 999 is one of the class of New York Central engine which hauled a 361,000 pound train from New York to Buffalo, 436.32 miles at the rate of 64.22 miles an hour, exclusive of stops. This superb locomotive which was built at the shops of the New York Central and Hudson River Railroad, was on exhibition at the Columbian Exhibition at Chicago, and is the most popular and widely known engine in American today. (1896)
#999 of the NYC and HRR , 1893