These are treasures that Israel doesn’t allow anyone to check out of its national library. Kafka’s Hebrew vocabulary notebook. The first written evidence of the Yiddish language. And the Crowns of Damascus, Bibles smuggled out of Syria 20 years ago in a Mossad spy operation so classified that their very existence in Israel was kept secret for years. Many nations maintain official libraries of their countries’ most prized historical manuscripts. Israel’s is unique: It seeks manuscripts from every country in the world where Jews have ever lived.