The 1939–1940 New York World's Fair was a world's fair held at Flushing Meadows–Corona Park in Queens, New York City, 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.

1939 New York World's Fair

Planning

In 1935, at the height of the Great Depression, a group of New York City businessmen decided to create an international exposition to help lift the city and the country out of its economic woes. Not long after, these men formed the New York World's Fair Corporation, whose office was placed on one of the higher floors in the Empire State Building. The NYWFC, which elected former chief of police Grover Whalen as president, also included Winthrop Aldrich, Mortimer Buckner, Floyd Carlisle, Ashley T. Cole, John J. Dunnigan, Harvey Dow Gibson, Mayor Fiorello La Guardia, Percy S. Straus, and many other business leaders.

1939 New York World's Fair

Over the next four years, the committee planned, built, and organized the fair and its exhibits, with countries around the world taking part in creating the biggest international event since World War I. Working closely with the Fair's committee was New York City Parks Commissioner Robert Moses, who saw great value to the city in having the World's Fair Corporation (at its expense) remove a vast ash dump in Queens that was to be the site for the exposition. This event turned the area into a City park after the exposition closed.

1939 New York World's Fair

The delivery of materials for the fair faced a speedbump in 1938 when it was temporarily halted for the duration of the New York City truckers strike.

Edward Bernays directed public relations of the fair in 1939, which he called "democracity". Grover Whalen, a public relations innovator, saw the Fair as an opportunity for corporations to present consumer products, rather than as an exercise in presenting science and the scientific way of thinking in its own right, as Harold Urey, Albert Einstein, and other scientists wished to see the project. "As events transpired," reported Carl Sagan, whose own interest in science was nevertheless sparked by the Fair's gadgetry, "almost no real science was tacked on to the Fair's exhibits, despite the scientists' protests and their appeals to high principles."

Promotion of the Fair took many forms. During the 1938 Major League Baseball season, the Brooklyn Dodgers, New York Giants, and New York Yankees promoted the event by wearing patches on the left sleeve of their jerseys featuring the Trylon, Perisphere, and "1939". The same year, Howard Hughes flew a special World's Fair flight around the world to promote the fair.

While the main purpose of the fair was to lift the spirits of the United States and drive much-needed business to New York City, it was also felt that there should be a cultural or historical association. It was therefore decided for the opening to correspond to the 150th anniversary of George Washington's first inauguration as President of the United States, and WPA artists painted murals which appeared in The New York Times Magazine.

According to the official pamphlet:

Grand opening

On April 30, 1939, a very cloudy Sunday, the fair had its grand opening, with 206,000 people in attendance. The April 30 date coincided with the 150th anniversary of George Washington's inauguration, in Lower Manhattan, as the first President of the United States. Although many of the pavilions and other facilities were not quite ready for this opening, it was put on with pomp and great celebration.

Plans for the United States Navy Fleet to visit New York City for the opening of the fair following maneuvers in the Caribbean were canceled, however, due to aggressive moves being made by Japan in the South China Sea, and the fleet instead transferred to the Pacific via the Panama Canal in April.