The S1 was displayed at the New York World's Fair of 1939–40 with the lettering "American Railroads" rather than "Pennsylvania Railroad", as 27 eastern railroads had one combined exhibit, which also included the Baltimore &amp; Ohio's duplex locomotive. To reach the Fair the S1 took a circuitous route over the Long Island Rail Road. Many obstacles, like some of the third rail guards, had to be temporarily removed and other obstacles were passed at a crawl to reach the fairgrounds. S1 was towed (facing backward) by smaller freight engines like PRR Ils and took a round-about route to the fair site. She ran up the Bel-Del, interchanged with the Lehigh and Hudson River Railway at Belvidere and NH at Maybrook. The S1 traveled over the Poughkeepsie and Hell Gate Bridge, crossed over the Hudson River and then brought it across on the NY Connecting. On March 13, 1939, the S1, lettered “American Railroads” on the tender, arrived at New York World’s Fair.