Until 1933, the Judaica and Hebraica collections of the Frankfurt University library, with around 40,000 volumes of Hebrew and non-Hebrew works, constituted the most important special collection on the European continent. The historic collection is named after Aron Freimann (1871-1948), the preeminent Judaica and Hebraica bibliographer of his time, who also composed the weighty catalog for this collection. The inventory aroused the interest of the Nazis and provided the occasion for the establi…