Short answers, pulled from the story.
The Albert Einstein Archives hold roughly 55,000 items from the life and work of Albert Einstein, including personal notes and love letters. The collection also contains a letter Einstein wrote to the Arabic newspaper Falastin proposing a "Secret Council" of Arabs and Jews to resolve the Arab-Israeli conflict.
The Albert Einstein Archives are located on the Givat Ram (Edmond J. Safra) campus of the Hebrew University of Jerusalem. The Archives moved into the Levy Building on that campus in July 2008.
Albert Einstein left his personal papers and their copyright to the Hebrew University of Jerusalem in his will. His 1950 will named Helen Dukas and Otto Nathan as trustees and stated that all literary rights and assets would be vested in the university.
The Albert Einstein Archives catalogue went online in 2003. The university announced in March 2012 that it had digitized the collection, releasing an initial 2,000 documents, and has continued adding more since the 19th of March 2012.
Einstein's son-in-law Rudolf Kayser, aided by the French Embassy, rescued his papers out of Berlin after the Nazis took power in 1933. Some material at Einstein's summer house in Caputh, Brandenburg was destroyed on purpose to keep it from being seized, though most of his work from 1930-1932 survived.
Manfred Waserman was the first curator of the Albert Einstein Archives, serving from 1988-1989. Ze'ev Rosenkranz succeeded him from 1989-2003, and Roni Grosz has headed the Archives since 2004.