Many Jews were issued passports from the German Government prior to mass deportations. At this time the Gestapo monitored the process to make sure they actually left. This collection contains about 500 passports from the Gestapo. Many of these Jews were preparing to immigrate to Palestine, although these records do not indicate if they were successful in leaving. Some of the other information includes the name, date and place of birth, and residence when they received the passport.
You can learn more about this database at the JewishGen website.