A diary kept by Nazi leader Alfred Rosenberg will be displayed at the US Holocaust Memorial Museum in Washington, DC. The museum is set to receive the document during a short ceremony on Dec. 17.

The diary was recovered earlier this year after a 17-year search by US Immigration and Customs Enforcement. The document was among several Nazi-era items in the possession of German-Jewish researcher and Nuremberg prosecutor Robert Kempner, who had been given permission by the Office of the Chief of Counsel of War Crimes to keep a number of unclassified documents “for purposes of writing, lecturing and study.”

In 1997, Kempner’s heirs informed the US museum of their intention to donate many of these documents, but the Rosenberg diary went missing during a dispute over the estate. Kempner died in 1993 at the age of 93.

Rosenberg held a number of important German state and Nazi Party posts. He was senior editor of the Nazi Party newspaper, and much of his writing featured anti-Semitic diatribes. His diary is said to include about 400 handwritten pages, all in German. The entries cover the years 1936 to 1944.

Rosenberg was found guilty at Nuremberg of war crimes, and was subsequently killed by hanging.