
It is no secret that Area 51 is perhaps the most secretive place in the world.

But revelations and pictures shared in the 2011 book 'Area 51: An Uncensored History' provides an inside look at one of the United States' greatest mysteries.

The book primarily focuses on the Roswell UFO incident of 1947 and disproving long held conspiracy theories that a flying disk crashed near Roswell, New Mexico.

Author Annie Jacobsen posits that the incident was actually linked to Soviet dictator Joseph Stalin in an attempt to cause disarray in the United States.

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Area 51: An Uncensored History' provides an inside look at one of the United States' greatest mysteries - the Roswell UFO Incident of 1947 that rocked Area 51

Photos include an aircraft designed the Horten brothers of Germany in 1945. The United States Army Counter Intelligence Corps went on an extension manhunt for the brothers, following the 1947 crash, in hopes of finding their 'flying disk

Trailers at Area 51 where U-2 pilots like Hervey Stockman and Tony Bevacqua slept while learning how to fly the CIA's first spy plane

Pictures also show the area before it became a government hot spot. The area now known as Area 51 is actually the dry lake remains of Groom Lake, Nevada

She specifically alleges that Sputnik lead inventor Sergei Korlev, Russia's atomic bomb lead developer Igor Kurchatov and mathmatician Mstislav Keldsh were tapped by Stalin to be a part of his secret UFO study team.

Jacobsen also suggests that children, up to the age of 12, were found inside the aircraft that eventually crashed.

Jacobsen spoke with more than 70 scientists, pilots and engineers who were able to provide insight into the peculiar test site.

Photos include an aircraft designed the Horten brothers of Germany in 1945. The United States Army Counter Intelligence Corps went on an extension manhunt for the brothers, following the 1947 crash, in hopes of finding their 'flying disk.'

The U-2 spy plane is photographed as it is tested at Area 51 in 1955. Early missions involving the plane were used throughout the Cold War for surveillance over Cuba, the Soviet Union and China

Author Annie Jacobsen spoke with more than 70 scientists, pilots and engineers who were able to provide insight into the peculiar test site

Part of a U-2 spy plane seen in 1955 coming out of a transport airplane at Area 51 - where the secret craft was designed and perfected

Pictures also show the area before it became a government hot spot. The area now known as Area 51 is actually the dry lake remains of Groom Lake, Nevada.

Area 51 has long been lauded as one of the greatest American mysteries as enthusiast have worked tirelessly to find out more about extraterrestrials.

Bob Lazar, a government scientist and engineer, allegedly worked to reverse-engineer alien technology and claimed that he had seen many 'flying saucers' in the area in 1989.

He claimed the government was hiding Martian vehicles at the 'third dry lake bed from Area 51', which is believed to be close to the Papoose Lake range.

Jacobsen posits that the incident was actually linked to Soviet dictator Joseph Stalin in an attempt to cause disarray in the United States, She specifically alleges that Sputnik lead inventor Sergei Korlev, Russia's atomic bomb lead developer Igor Kurchatov and mathmatician Mstislav Keldsh were tapped by Stalin to be a part of his secret UFO study team

Until 1945, these men worked for Adolf Hitler, but as soon as the war ended they began working for the American military and various intelligence organizations under 'Operation Paperclip'

An overhead look at southern Nevada, where Area 51 is said to be