Since the »Kommission für Zeitgeschichte« (Commission for Contemporary History) was founded in 1962, the relationship between the Catholic Church and National Socialism has constituted a major focal point
of its research efforts. This emphasis is reflected in a large number of documentary collections and monographs dealing with the subject. Thanks in large part to these publications, the Nazi-era
Kirchenkampf (church struggle) now belongs to the best-researched and documented episodes of recent history.
In the meantime, the amount of source materials discovered and published has grown to such dimensions that an index offering an organized overview of the material, and therefore readier access to it, is
badly needed. The Index of Documents, 1933–1945 addresses that need. It builds on earlier efforts from the 1980s and contains more than 9,500 document numbers. The relevant document texts
have been reproduced, in their entirety or selectively, in the Commission's series A (Sources) and B (Scholarship) up to 1988.
The documents in this volume are organized in three separate ways: 1.) in a successively numbered chronological main registry that includes complete bibliographical
citations; 2.) through an index of senders; and 3.) through an index of receivers. As a result of this cross-referencing system, any document can be quickly located.