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Nelson Rockefeller arrives at Miami International Airport after a survey of oil fields in Venezuela, April 1, 1939. (AP Photo)

Nelson Rockefeller, left, presents Ruth Haller Ottaway, president of the National Council of Women of the United States, to the women of America, an 1...

Honus Wagner, coach of the Pittsburgh Pirates, who celebrates his 65th birthday tomorrow, reminisces over his glory days, Feb. 23, 1939. Photo on wall...

The Duchess of York assisting Princess Margaret into a car, and Princess Elizabeth and the Duke of York seen leaving the church after a service at St...

A far-reaching Italo-German agreement followed the visit of Italian Foreign Minister Count Gian Galeazzo Ciano to Reichschancellor Adolf Hitler at his...

Emperor Haile Selassie, center, as he attended a special memorial service near the stricken town of Dessie, Ethiopia, on Dec. 28, 1935, for victims of...

Emperor Haile Selassie photographed at an open air memorial service near Dessie, Ethiopia on Dec. 28, 1935, when tribute was paid to the victims of th...

Emperor Selassie at Dire Dawa, Ethiopia, during his short visit to the town on Dec. 4, 1935. (AP Photo)

Marshal Peter Badoglio, left, and General Emilio De Bono, who greeted him, seen on arrival in Massawa, Eritrea on Nov. 28, 1935. (AP Photo/ Joe Caneva...

The Pan American Airways 25 ton flying boat, China Clipper, photographed completing tests in Alameda, Calif on Nov. 27, 1935, before the start of the...

The new Earl Jellicoe following the cortage of the late Earl, on Nov. 25, 1935. (AP Photo)

Prince Arthur of Connaught with Girl Guides at a Boys Club he opened on Nov. 25, 1935, in Coulsdon, England. (AP Photo)

Prince Starhemberg addressing the huge meeting, calling for the support of the workers for the patriotic front, in the Hauptplatz, Vienna, Austria, on...

The Emperor of Abyssinia, with the Crown Prince and Prince Makonnen, inspecting the Associated Press plane, specially chartered to bring pictures on t...

Goschenen, the railway station on the north Swiss side of the St Gothard tunnel on Nov. 22, 1935. The entrance to which can be seen in this picture. (...

Haile Selassie Gugsa, grandson of Emperor Yohannes, entering the city of Mek'ele with Piero Franca, political advisor to Gugsa, on Nov. 18, 1935. (AP...

A road leading from the Temple of the Sphinx to the Pyramid of Chephren can be seen on the left of this picture on Nov. 12, 1935 in Egypt. It is built...

General Paolo Badoglio, Chief of Staff of the Italian Army, photographed during his tour of the Northern front on Nov. 12, 1935. (AP Photo/ Joe Caneva...

The ancient cathedral of Axum, Ethiopia on Nov. 12, 1935. (AP Photo/ Joe Caneva)

General Pietro Maravigna, commander of the Italian 2nd Army Corps, standing by the Monument overlooking the Adowa battlefield of 1896, on Nov. 12, 193...

Winston Churchill addresses a meeting at the Camberwell Baths, London, England, on Nov. 1, 1935. (AP Photo)

Winston Churchill addresses a meeting at the Camberwell Baths, London, England, on Nov. 1, 1935. (AP Photo)

Sir Samuel Hoare and Lady Maud Hoare photographed at Victoria station in London on Oct. 31, 1935, before his departure for Geneva. (AP Photo)

Writer G. K. Chesterton sits on a bench in Brighton, England, on Oct. 30, 1935. (AP Photo)

General Kondylis who attended as Viceroy at the celebrations in the cathedral in Athens, Greece, on Oct. 30, 1935, to mark the national anniversary of...

Prince Starhemberg photographed in Vienna, Austria, on Oct. 30, 1935, during his mother's 60th birthday celebrations with two of his nieces and a neph...

Officers and men saluting the flag of victory during a parade in Adowa, Ethiopia, on Oct. 29, 1935, after Italian occupation. (AP Photo)

Ramsay MacDonald, left, speaking at the National Labour Conference at Caxton Hall, London, England, on Oct. 28, 1935. Also present are Earl de la Warr...

British child actor Freddie Bartholomew with his aunt, Millicent Mary Bartholomew, on Oct. 28, 1935, who in a Los Angeles court was named the boy star...

A Starhemberg family portrait taken in Vienna on Oct. 28, 1935 when Princess Fanny Starhemberg celebrated her 60th birthday. Left to right, standing,...

92 year old Charlotte Despard, who is remembered for the part she played in the suffragette movement, being assisted onto the platform to speak at an...

Prince Starhemberg addressing the troops during a parade in Linz, Austria on Oct. 27, 1935. (AP Photo)

Sylvia Pankhurst addresses protesters at an anti-Nazi demonstration in Hyde Park, London, England on Oct. 27, 1935. (AP Photo/Len Putnam)

Tanks moving up to the front past infantrymen and gun crews between Adigrat and Mek'ele, on Oct. 24, 1935. (AP Photo/ Joe Caneva)

From left: Vice Admiral Paul Behnke, Admiral H.C. Erich Raeder, chief of the Reichsmarine; second row, left: Berlin police head Admiral Magnus von Lev...

The 175th anniversary of the poet Friedrich von Schiller is celebrated in Marbach am Neckar, Germany, Nov. 10, 1934. At center, not in military dress,...

German Ambassador Konstantin von Neurath, now foreign minister in the von Papen cabinet, is pictured with his wife Marie Auguste as they arrived for t...

Mandatory Credit: Photo by Steve Back/Daily Mail /REX (1026173a) Martian Or Alien Found At Scene Of Wreckage Of Flying Saucer At Roswell In The Deser...

Mandatory Credit: Photo by ANL/REX Shutterstock (1322254a) A Portrait Of Queen Charlotte (1744-1818) At Frogmore House Berkshire. Wife Of King George...

Mandatory Credit: Photo by History Archive/REX Shutterstock (2539490a) Princess Charlotte of Wales (1796-1817) only child of George IV of Great Brita...

In the decade before the first Earth Day, our view of the planet was still fuzzy. Scientists and engineers of the 1960s were experimenting with satell...

Satellites often detect fires in North Korea in April. As snow retreats in the spring, many farmers use fire to clear away last year's crop debris and...

NASA will celebrate the 45th annual Earth Day April 17-22 with a variety of live and online activities to engage the public in the agency's mission to...

A Hyperspectral Imager for the Coastal Ocean (HICO) image of western Lake Erie, Aug. 15, 2014, taken from the orbital perspective of the International...

Earth Day 3 (Earth Art (New Guinea Rainforest from the ISS)

One of a series of photos of the moon and Earth's atmosphere as seen from the International Space Station over a period of time that covered a number...

One of the Expedition 40 crew members aboard the International Space Station recorded this colorful image of Aurora Australis on July 15, 2014. Achern...

The Hubble Space Telescope is the only NASA spacecraft designed for on-orbit repair and maintenance. The Lockheed Martin Corporation was contracted to...

This photo shows the Hubble Space Telescope's fully assembled Optical Telescope Assembly (OTA) at the then Perkin-Elmer plant in Danbury, Connecticut...

On April 22, 2015, Calbuco volcano in southern Chile began erupting for the first time since 1972. An ash cloud rose at least 15 kilometers (50,000 fe...