World's Fairs or International Expositions are large-scale exhibitions that highlight technology, agriculture and other innovations of national or cultural significance. The New York World's Fair took place in Flushing Meadows, Queens from April 30, 1939 to October 31, 1940. The collection consists of two sets of different postcards from the 1939 New York World's Fair. One set by Underwood & Underwood shows miscellaneous scenes at the fair, primarily buildings. The other set is comprised of photographs of the sculpture at the Fair, printed by the Meridien Gravure Co., Meridien, Connecticut.

World's Fairs or International Expositions are large-scale exhibitions that highlight technology, agriculture and other innovations of national or cultural significance. The New York World's Fair took place in Flushing Meadows, Queens from April 30, 1939 to October 31, 1940. The collection consists of ten photographs of the New York World's Fair.

World's Fairs or International Expositions are large-scale exhibitions highlighting technology, agriculture, and other innovations of national or cultural significance. The New York World's Fair occurred in Flushing Meadows, Queens, from April 30, 1939, to October 31, 1940. The theme was "The World of Tomorrow." This souvenir diary and photograph album combines official drawings and photographic images of buildings at the 1939 New York World's Fair with a personal photograph album and diary section, in which the reader was to record his or her own memories of the fair. The diarist who completed this souvenir remains unidentified.

The collection consists of photographs taken during the first years of the United States Post Office Department air mail service. Many of these photographs are portraits of individual air mail service pilots. The first use of air mail in the United States occurred in September, 1911, while the first air mail route from Washington to New York via Philadelphia started in 1918. A transcontinental route was established by 1920. In 1925 the government transitioned out of the air mail business with the passage of the Kelly Air Mail Act, which called for commericial airlines to bid on air mail routes established by the Post Office.