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A page dated February 7, 1940 from the diary of German Nazi ideologue Alfred Rosenberg is displayed at the Holocaust Memorial Museum in Washington,DC on December 17, 2013 as the US Immigration and Customs Enforcement (ICE) agency hands over the document to the museum. The Rosenberg Diary, kept by Alfred Rosenberg, a confidant of Adolf Hitler whose racist theories underpinned Nazi Germany's annihilation of six million Jews, had been missing since the Nuremberg war crimes trials ended in 1946. The US Immigration and Customs Enforcement (ICE) agency, a key player in finding the loose-leaf diary, said it had initially been taken by a Nuremberg prosecutor, Robert Kempner, "contrary to law and proper procedure." Kempner, a German lawyer who fled to the United States during World War II and settled in Pennsylvania, held on to the diary -- which covers a 10-year period from 1934 -- until his death in 1993, ICE said. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

A page dated February 7, 1940 from the diary of German Nazi ideologue Alfred Rosenberg is displayed at the Holocaust Memorial Museum in Washington,DC on December 17, 2013 as the US Immigration and Customs Enforcement (ICE) agency hands over the document to the museum. The Rosenberg Diary, kept by Alfred Rosenberg, a confidant of Adolf Hitler whose racist theories underpinned Nazi Germany's annihilation of six million Jews, had been missing since the Nuremberg war crimes trials ended in 1946. The US Immigration and Customs Enforcement (ICE) agency, a key player in finding the loose-leaf diary, said it had initially been taken by a Nuremberg prosecutor, Robert Kempner, "contrary to law and proper procedure." Kempner, a German lawyer who fled to the United States during World War II and settled in Pennsylvania, held on to the diary -- which covers a 10-year period from 1934 -- until his death in 1993, ICE said.   AFP PHOTO/Nicholas KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)