Search scholarly editions of letters

Search letters

With correspSearch you can search within the metadata of diverse scholarly editions of letters. One can search according to the letter's sender, adressee, as well as place and date of the letter's creation.

This web services assembles and analyzes files in the Correspondence Metadata Interchange (CMI) format which is based on the TEI extension "correspDesc" developed by the TEI Correspondence SIG

Search letters


The bibliographic information of the scholarly editions can be found in the data overview.

The database is continually growing. Any published scholarly edition of letters (in print or digital form) can create an index according to the "Correspondence Metadata Interchange" format and register with the web service correspSearch.


Join the discussion

If you have general questions or feedback concerning "correspDesc", the CMI format or the Webservice "correspSearch", you can join the mailing list of the TEI SIG Correspondence and post your request there. This allows other scholars to contribute to the discussion.

Otherwise (and especially if you want to report an error found in the web service) you can of course send us an email.


The API allows you to query correspSearch automatically and integrate the results into your own website.

Query results are provided as TEI-XML files. See the documentation of the interface to learn about how to set up a query.


  • Letters: 26068
  • Identified persons: 2631
  • Identified places: 877
  • Publications: 107
  • Oldest letter: 01/01/1510
  • Most recent letter: 11/11/1974
  • News

    Further development of CMIF

    New blog post published about "Perspectives of the further development of the Correspondence Metadata Interchange Format (CMIF)" in "digiversity". [Read blog post]


    The Web service correspSearch was granted with the Berlin Digital Humanities Award 2015 (First Prize). [More information in German]

    Recently added data

    Briefe und Akten zur Kirchenpolitik Friedrichs des Weisen und Johanns des Beständigen 1513 bis 1532. Ed. by Armin Kohnle and Manfred Rudersdorf. Online Edition:

    Beckmann, Klaus; Schulze, Hans-Joachim (Ed.): Johann Gottfried Walther: Briefe. Leipzig: Deutscher Verlag für Musik 1987.

    Stauffer, George B. (Ed.): The Forkel - Hoffmeister & Kühnel correspondence : a document of the early 19th-century Bach revival. New York , Peters 1990.

    Ludwig Boltzmann. Leben und Briefe. Edited by Walter Höflechner. Publikationen aus dem Archiv der Universität Graz, Band 30. Graz 1994.

    Briefe von Alexander von Humboldt an Varnhagen von Ense aus den Jahren 1827 bis 1858. Edited by Ludmilla Assing. Brockhaus: Leipzig 1860.

    Richard Strauss Werke. Kritische Ausgabe – Online-Plattform,

    En el ojo del huracán - Cartas de Ultramar a España, 1823. Online:

    Digitale Edition der Briefe Erdmuthe Benignas von Reuß-Ebersdorf (1670-1732) ed. by Martin Prell and Julia Schmidt-Funke. Jena 2017.

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