1939 New York World's Fair - Rail Road Building:  The 1939–40 New York World's Fair was a world's fair held at Flushing Meadows–Corona Park in Queens, New York, United States. It was the second most expensive American world's fair of all time, exceeded only by St. Louis's Louisiana Purchase Exposition of 1904. Many countries around the world participated in it, and over 44 million people attended its exhibits in two seasons.   It was the first exposition to be based on the future, with an opening slogan of "Dawn of a New Day", and it allowed all visitors to take a look at "the world of tomorrow".  When World War II began four months into the 1939 World's Fair, many exhibits were affected, especially those on display in the pavilions of countries under Axis occupation. After the close of the fair in 1940, many exhibits were demolished or removed, though some buildings were retained for the 1964–1965 New York World's Fair, held at the same site.  Among the Pavilions was the Railroad Building.  Another large building was the Eastern Railroads Presidents' Conference, dedicated to rail transport.  The centerpiece of the Railroad Conference exhibits (on seventeen acres) was "Railroads on Parade", a spectacular live drama re-enacting the birth and growth of railroads. It had music by Kurt Weil and choreography by Bill Matons.  In addition to the show, there were important historical objects on display by the various railroads and manufacturing companies, such as the Tom Thumb engine. The Pennsylvania Railroad (PRR) had its S1 engine on display, mounted on rollers under the driver wheels and running continuously at 60 mph (97 km/h) all day long. The British London Midland & Scottish Railway sent their Coronation Scot express train with a locomotive LMS Princess Coronation Class 6229 Duchess of Hamilton, (disguised as sister locomotive 6220 Coronation), to the fair.  GM's Electro-Motive Division had a display of their then new streamlined diesel-electric passenger locomotives. The Italian state railways displayed one of their record-setting ETR 200 electric multiple unit cars.  This Linen Era postcard is in good condition, but there is some franking on the image.  Miller Art Co.  Brooklyn, N.Y/