Thomann Tewarson, H. (1994). German-Jewish identity in the correspondence between Rahel Levin Varnhagen and her brother, Ludwig Robert: Hopes an realities of emancipation 1780-1830. Year book / Leo Baeck Institute.

Thomann Tewarson, Heidi. "German-Jewish Identity in the Correspondence Between Rahel Levin Varnhagen and Her Brother, Ludwig Robert: Hopes an Realities of Emancipation 1780-1830." Year Book / Leo Baeck Institute 1994.

Thomann Tewarson, Heidi. "German-Jewish Identity in the Correspondence Between Rahel Levin Varnhagen and Her Brother, Ludwig Robert: Hopes an Realities of Emancipation 1780-1830." Year Book / Leo Baeck Institute, 1994.