One of the most unusual episodes in the annals of Hebrew printing involved the first Jewish printers in Poland—Samuel, Asher, and Elyakim Helicz—who began to print in Cracow or, more likely, in neighboring Kazimierz, in 1534.1 Within a year of opening their business, the brothers had produced five relatively short titles, all of which were first editions and four of which were the first Yiddish books ever printed. After about a year of work, the Helicz brothers gave up publishing only to return to the trade about three years later, when they published several classic—and more substantial—rabbinic works in quick succession. However, it was not Samuel, Asher, and Elyakim Helicz who returned to the Hebrew publishing business in Cracow in 1538 but rather Paul, Andreas, and Johannes Helicz, neochristiani.2