The Yankee Clipper was an upscale New Haven passenger train that ran the Shore Line between New York and Boston. A section survived until Amtrak.
New York, New Haven and Hartford Railroad - Wikiwand
Model Railroader Modelling The 50s - The Glory Years of Rail
City Life Org - Score Big with Extra Metro-North Service to This Weekend's Yankees-Red Sox Series
Route map from ATSF Spring 1958 passenger timetable.
Yankee Stadium Opening Day: Ride a Vintage 1917 Subway Car - Thrillist
Used Book in Good Condition
New Haven Passenger Trains (Great Passenger Trains)
Yankee Clipper History Yankee Clipper First Atlantic Flight
railroads - HistoricRail.com
The New York Clipper (January 1914) - Lantern
New Haven Railroad history - Trains
New Haven Railroad: Map, Logo, History, Rosters