Bloch, Geschichte der Entwickelung der Kabbala, Trier, 1894.
Ehrenpreis, Kabbalistische Studien, Part 1., Frankfort-on-the-Main, 1895.
Vacant, Dictionaire de théologie catholique, Paris, 1899, ff., art. "Cabale," Vol. II, 1271-91.
Wünsche, art. "Kabbala" in Herzog-Hauck Realencyklopädie für Protestantische Theologie und Kirche, Vol. IX, Leipsic, 1901.
Bischoff, die Kabbalah; Einführung in die jüdische Mystik und Geheimwissenschaft, Leipsic, 1903 (treats the subject in a catechetical manner).
Schülein, art. "Kabbala" in Kirchliches Handlexikon, München, 1907, ff. Vol. II, 255-257.
We have purposely refrained from referring to the historical handbooks of D. Cassel, S. Back, G. Karpeles, etc., because they offer nothing new from a critical point of view; and for obvious reasons we make no mention of articles on the Cabala in English Cyclopaedias.