Committee activities

• dbv Commission for Provenance Research and Provenance Cataloging (founding member)
• Working Group of Regional Libraries in Section 4 of the German Library Association (member)
• Working Group Historical Collections in NRW and Rhineland-Palatinate (member)
• Working Group Provenance Research and Restitution - Libraries (founding member)
• Working Group Provenance Cataloging NRW (founder)
• Working Group Provenance Research NRW (member)
• Advisory Board of the KunstBibliothek Köln, KuBi Köln (permanent guest)
• Board of the Kölnische Bibliotheksgesellschaft e.V. (permanent guest)
• Provenance Research Coordination Office NRW / KPF.NRW (Scientific Advisor)
• Cologne Emergency Association of Archives and Libraries (Chairwoman)

Book publications and editorial work

• The whole of Cologne is still full of book treasures: Book sponsorship program for the preservation of the historic city library, together with Caroline Dohmen-Richter. Cologne, 2022 Direct link to the catalog
• Homage to Hittorff. 1792-1867: Pictures, books and tributes. Cologne: University and City Library of Cologne, 2020 (Schriften der Universitäts- und Stadtbibliothek Köln ; 28) Direct link to the catalog
• Library director under National Socialism. Hermann Corsten and the University and City Library of Cologne. Cologne: USB, 2012. (Small publications of the University and City Library of Cologne, 36) Direct link to the catalog
• Traces of books. The fate of Elise and Helene Richter and their library in the "Third Reich". 2nd ed. Cologne, Weimar, Vienna: Böhlau, 2010. (Schriften der Universitäts- und Stadtbibliothek Köln ; 19) Direct link to the catalog,also available as e-book
• Book traces. The fate of Elise and Helene Richter and their library in the "Third Reich". Cologne, Weimar, Vienna: Böhlau, 2009. (Schriften der Universitäts- und Stadtbibliothek Köln ; 19) Direct link to the catalog
• The Eduard Prüssen Collection in the University and City Library of Cologne. Complete catalog 2013. Cologne: University and City Library of Cologne, 2011. (Electronic publication series of the University and City Library of Cologne, 6) Direct link to the catalog
• Günther Pflug - A librarian on the way into the information age. Cologne: University and City Library of Cologne, 2013. (Small series of publications of the University and City Library of Cologne, 37) Direct link to the catalog
• The Eduard Prüssen Collection in the University and City Library of Cologne. Book and press illustrations. Catalog raisonné, main volume. Cologne: University and City Library of Cologne, 2011. (Electronic publication series of the University and City Library of Cologne, 4) Direct link to the catalog

Book contributions

• "We were painfully deprived of genuine intellectual education". Epilogue to the memoirs, in: Memories of Mathilde and Melanie von Mevissen to their father. Cologne: USB, 2024 (annual edition of the Kölnische Bibliotheksgesellschaft 2024)
• What remained was only the name "L'Université de Cologne organisée en école centrale", in: Köln und seine Universität seit 1919. Cologne: Historisches Archiv der Stadt Köln, 2021. (Announcements from the City Archive of Cologne; 108), pp. 27-50
• A special treasure - a special responsibility. The library of Jakob Ignaz Hittorff in the University and City Library of Cologne, in: Hommage für Hittorff. 1792-1867: Pictures, books and tributes. Cologne: University and City Library of Cologne, 2020 (Schriften der Universitäts- und Stadtbibliothek Köln ; 28)
• Traces of an unusual connection: The Islandica Collection; Dialect opulently illustrated: The Cologne Bibles; A treasure in a surprising place: The indulgence poster from Cologne Cathedral, in: Marx, Peter W.; Neuhausen, Hubertus (eds.): Treasures of the University of Cologne. Cologne: Greven, 2019.
• The Islandica Collection in the University and City Library of Cologne, In: Syré, Ludger (ed.): Ressourcen für die Forschung. Special collections in libraries. Frankfurt am Main: Klostermann, 2018 (Zeitschrift für Bibliothekswesen und Bibliographie, Sonderband 123), pp. 101-111.
• Wallraf's books, In: Wallraf's legacy : a citizen saves Cologne. Cologne: Wallraf-Richartz-Museum & Fondation Courboud, 2018, pp. 158-165
• Races and shopping trips. German librarian interests in occupied Belgium, 1940 to 1944, In: Bischoff, Sebastian, Jahr, Christoph, Mrowka, Tatjana, Thiel, Jens (eds.): Belgica - terra incognita? Results and Perspectives of Historical Research on Belgium. Münster, New York: Waxmann, 2016. (Historical research on Belgium; 1) pp. 166-173
• The dream of the Cologne Union Catalog or a tongue-in-cheek journey to the year 1937, In: Schmitz, Wolfgang (ed.): Ein Bibliothekar mit Informationskompetenz. Commemorative publication on the 60th birthday of Dr. Rolf Thiele. Cologne: USB, 2012 (Electronic publication series of the University and City Library of Cologne, 5), pp. 57-68
• The search for traces of Nazi-confiscated cultural property in libraries, In: Neuheuser, H.-P. (ed.): Transmission and traces of use in historical book collections. Cologne: University and City Library of Cologne, 2012 (Kleine Schriften der Universitäts- und Stadtbibliothek Köln; 34) pp. 251-279
• Hermann Corsten in Cologne, In: Knoche, Michael (ed.): Wissenschaftliche Bibliothekare im Nationalsozialismus: Handlungsspielräume, Kontinuitäten, Deutungsmuster. Wiesbaden: Harrassowitz in Comm., 2011. (Wolfenbütteler Schriften zur Geschichte des Buchwesens, 46), pp. 225-242
• NS-Provenienzforschung in der Universitäts- und Stadtbibliothek Köln, In: Baresel-Brand, A. (ed.): Die Verantwortung dauert an. Contributions. Contributions by German institutions on dealing with cultural property seized as a result of Nazi persecution. Magdeburg: Koordinierungsstelle für Kulturgutverluste, 2010. (Publications of the Koordinierungsstelle für Kulturgutverluste; 8) pp. 227-242
• Sketches on provenance documentation, in: Thiele, Rolf (ed.): Der Bibliothekar im 21. Jahrhundert, ein traditionbewusster Manager. Commemorative publication for Wolfgang Schmitz on his 60th birthday. Cologne: University and City Library of Cologne, 2009. (Kleine Schriften der Universitäts- und Stadtbibliothek Köln; 26) pp. 89-98
• The book theft of the National Socialists. Strukturen der NS-Provenienzforschung, In: Freitäger, A. (ed.): "1933" - Hochschularchive und die Erforschung des Nationalsozialismus, Beiträge des Kolloquiums aus Anlass des 40jährigen Bestehens des Universitätsarchivs Köln am 8. April 2008. Cologne: Universitätsarchiv, 2010. (forum: universitätsarchiv, 1), pp. 75-86
• The library of the siblings Elise and Helene Richter in the University and City Library of Cologne, In: Dehnel, Regine (ed.): NS-Raubgut in Bibliotheken - Suche. Results. Perspectives. Third Hanover Symposium. Frankfurt am Main: Klostermann, 2008. (Journal of librarianship and bibliography : special volumes ; 9) pp. 127-138
• The world of yesterday: Dedicated copies from the library of Elise and Helene Richter. A contribution of provenance research at the University and City Library of Cologne , In: Alker, Stefan (ed.): Bibliotheken in der NS-Zeit. Göttingen: V&R unipress, 2008, pp. 103-120 Direct link to the catalog
• Together with Oliver Flimm: Der Weg des KUG zum umfassenden Recherche-Portal In: Kooperative Informationsverarbeitung an der Universität zu Köln: Bericht für das Jahr 2005. Köln: Zentrum für Angewandte Informatik der Universität zu Köln (ZAIK/RRZK), p. 135-141 Direct link to the catalog

Selection of journal articles

• Friendship with consequences. 400 years of William Shakespeare's First Folio, in: Marginalien: Zeitschrift für Buchkunst und Bibliophilie 252 (2024), pp. 49-62
• Cologne Chronicle digital. A library, archive and museum project of the University and City Library. in: History in Cologne, 70 (2023), pp. 327-334
• The sparkle of rare misprints Galileo Galilei: Sidereus nuncius from 1610, in: Marginalien. Journal of Book Art and Bibliophilia. 244 (2022), S. 75-86
• La collezione dantesca della Universitäts- und Stadtbibliothek di Colonia, in: Teca, 11, 4 (2021), pp. 135-138.
• Provenance research and provenance indexing in libraries: a review and outlook, in: Bibliotheksdienst 54 (2020), H. 10-11, pp. 820-832
• A late-breaking epochal work: The Manifesto of the Communist Party (1848), in: Marginalien. Journal of Book Art and Bibliophilia, 238 H., 3 (2020), pp. 62-70
• 100 years of USB Cologne: The era of Hermann Corsten from 1934 to 1954, in: ProLibris, 3 (2020), pp. 128-131
• Desolate condition - Ferdinand Franz Wallraf's library, in: ProLibris 3 (2018), pp. 122-123
• Whoever paid got a place in heaven. A unique find: the indulgence poster from Cologne Cathedral, In: Jahresbericht. Cologne Grammar School and Endowment Fund, (2017), pp. 50-51
• The digitization of the Rhenish Department - an example of the structural change in the digitization of old holdings, In: ProLibris 3 (2017), pp. 136-137
• Fifteen years of digitization in the University and City Library of Cologne: Balance, change and outlook, In: Bibliotheksdienst 50 (2016), pp. 960-970
• "Modern collections" - or how to meet the demands of collectors, librarians and researchers, In: ABI Technik 36 (2016), pp. 195-196
• Together with Ernst Stinner: Face to face - The portrait collection of the University and City Library of Cologne, in: ProLibris 2 (2012), pp. 140-143
• Looking over the shoulder of Eduard Prüssen, in Marginalien. Journal for book art and bibliophilia, issue 205. 1, (2012), p. 99
• A special kind of museum guide: Review of the book by Anderl, Gabriele (ed.): ... wesentlich mehr Fälle als angenommen. 10 years of the Commission for Provenance Research. Vienna: Böhlau, 2009, In: ProLibris 2 (2010), pp. 100-104
• The library of Elise and Helene Richter in the University and City Library of Cologne, In: Bibliothek Forschung und Praxis 34, Heft 1 (2010), pp. 77-80
• Destroyed and lost: The storming of the trade union libraries on May 2, 1933. The University and City Library of Cologne restituted the only two surviving books from the former Cologne Central Library of the Free Trade Unions, In: ProLibris 3 (2009), pp. 129-133
• The University and City Library of Cologne restituted the only two surviving books from the former Cologne Central Library of the Free Trade Unions, In: ProLibris 3 (2009), pp. 129-133
• Art restitution and provenance research, In: ProLibris 3 (2008), p. 140
• Art restitution and provenance research: The general meeting of the "Kölnische Bibliotheksgesellschaft e.V.", In: ProLibris 3 (2008), p. 140
• Nazi provenance research at the USB: The library of Elise and Helene Richter, In: Kölner Universitäts-Journal 1 (2006), p. 13-14
• The library of Elise and Helene Richter in the University and City Library of Cologne, In: ProLibris 2 (2006), pp. 70-73

Articles in online publications

• The Dante Collection in the University and City Library of Cologne, In: TECA 11, No. 4 (2021), pp. 135-138
• Together with Ernst Stinner: From face to face - The portrait collection of the University and City Library of Cologne, In: ProLibris 2 (2012), pp. 140-143
• Looking over the shoulder of Eduard Prüssen, in Marginalien. Journal for book art and bibliophilia, issue 205. 1, 2012, p. 99
• A special kind of museum guide: Review of the book by Anderl, Gabriele (ed.): ... wesentlich mehr Fälle als angenommen. 10 years of the Commission for Provenance Research. Vienna: Böhlau, 2009, In: ProLibris 2 (2010), pp. 100-104
• The library of Elise and Helene Richter in the University and City Library of Cologne, In: Bibliothek Forschung und Praxis 34, Heft 1 (2010), pp. 77-80
• Destroyed and lost: The storming of the trade union libraries on May 2, 1933. The University and City Library of Cologne restituted the only two surviving books from the former Cologne Central Library of the Free Trade Unions, in: ProLibris (3) 2009, pp. 129-133
• The University and City Library of Cologne restituted the only two surviving books from the former Cologne Central Library of the Free Trade Unions, In: ProLibris (3) 2009, pp. 129-133
• Art restitution and provenance research, In: ProLibris 3 (2008) p. 140
• Art restitution and provenance research: The general meeting of the "Kölnische Bibliotheksgesellschaft e.V.", In: ProLibris 3 (2008), p. 140
• Nazi provenance research at the USB: The library of Elise and Helene Richter, in: Kölner Universitäts-Journal 1 (2006), pp. 13-14
• The library of Elise and Helene Richter in the University and City Library of Cologne, in: ProLibris 2 (2006), pp. 70-73

Lectures & further education (in selection)

Transit routes, institutional and collection history: Lecture in the certified course "Bibliothekarische Provenienzforschung" in the continuing education program for provenance research at the FU Berlin. 2022 - 2024

Digitization is more than scanning: Process management at the USB Cologne. Lecture initiative training course "Successful process management: preparation and implementation of digitization projects" on 06.07.2017 in Cologne

Organizational and technical issues in digitization projects. Lecture "Successful process management: preparation and implementation of digitization projects" on 07.07.2017 in Cologne

To be a fair and just solution - the restitution of the Richter Library. Lecture at the 106th Librarians' Conference in Frankfurt am Main, 23.05.2017

"The path to structured provenance cataloging in the library system". Lecture at the 6th Library Congress in Leipzig on 14.3.2016; ZBIW training course "Cataloguing old prints" on 19.4.2016 in Paderborn

"Recognizing the signs. Investigation and identification of Nazi-looted property". Lecture initiative training course "Spurensuche. Nazi-looted property in libraries and archives" on 10.12.2015 in Berlin

"New ways of provenance cataloging". ZBIW advanced training course on provenance indexing, 28/29.1.2015; lecture at the 104th Librarians' Conference in Nuremberg on 27.5.2015; initiative advanced training course "Spurensuche. Nazi looted property in libraries and archives" on 11.12.2015 in Berlin

Librarian interests in Belgium, 1940-1944. Lecture at the conference "Secret favorite Belgium?" - 2nd workshop of the Arbeitskreis Historische Belgienforschung in Cologne, 4.7.2014 in Cologne, University and City Library

"Collections of the University and City Library of Cologne. Cultural transmission via the internet." Symposium: Handschiften & Alte Drucke of the VDB in Blaubeuren on 24 October 2012; lecture at the 101st German Librarians' Day in Hamburg on 23 May 2012; lecture at the ZBIW training course "Erfahrungsaustausch Altbestandskatalogisierung" on 3 June 2013 in the Kardinal-Schulte-Haus, Berg.-Gladbach

"Restitution of "NS looted property" in libraries. Principles & practice of NS provenance research. Provenance and provenance research. 42nd seminar for antiquarians in Cologne on May 17, 2012 at the Venator & Hanstein auction house in Cologne

From the first trace to online cataloging: problems and possibilities in practice, in: NS-Raubgut Forschung in Bibliotheken und Archiven. A workshop from practice for practice. Schlaglichter 2010, Initiative Fortbildung für wissenschaftliche Spezialbibliotheken und verwandte Einrichtungen e.V. Digital edition: http://www.initiativefortbildung.de/html/schlaglichter/2010_NS_Raubgut.html

"Hermann Corsten in Cologne". Lecture at the conference of the Wolfenbütteler Arbeitskreis für Bibliotheks-, Buch- und Mediengeschichte: "Wissenschaftliche Bibliothekare in der Zeit des Nationalsozialismus. Scope for action, continuities, patterns of interpretation" on December 8, 2009 at the Duchess Anna Amalia Library in Weimar

"The realization of the portrait collection project. Lecture on the occasion of the opening of the exhibition "From face to face: the portrait collection of the University and City Library of Cologne" on May 8, 2008. (http://portraitsammlung.ub.uni-koeln.de)

National Socialist book theft and structures of Nazi provenance research. Lecture on the occasion of the colloquium of the University Archives "'1933' University Archives and the Study of National Socialism" on the occasion of the 75th anniversary of the "Gleichschaltung" of the University of Cologne on April 8, 2008

The world of yesterday: Dedicated copies from the library of Elise and Helene Richter. A contribution to provenance research at the University and City Library of Cologne. Lecture at the international conference "Bibliotheken in der NS-Zeit. Provenance Research and Library History" on March 26, 2008 at the University of Vienna

The library of the siblings Elise and Helene Richter in the University and City Library of Cologne. Lecture at the Third Hanover Symposium "NS-Raubgut in Bibliotheken. Search. Results. Perspectives" on November 9, 2007 at the Gottfried Wilhelm Leibniz Library / Lower Saxony State Library in Hanover

Radio and television reports and streaming episodes

• End of a tour de force. Ceremony at the University of Cologne on the occasion of the restoration of Ferdinand Franz Wallraf's library: WDR, Lokalzeit, November 24, 2023 Link to stream (report from 15:39 min.)
• Precious Shakespeare edition in the Wallraf-Richartz-Museum: WDR, Lokalzeit, March 2, 2023
• From the roll - scarce paper: WDR 5 Dok 5 - the feature, February 19, 2023
• The vault with the oldest book in the USB and why digitizing books is more than just scanning: Uni-Talk, 19 January 2023 Link to stream
• It's going well: The restoration project: WDR, Lokalzeit, December 6, 2022
• 100 years of the University and City Library Treasures of the USB: WDR, Lokalzeit, March 7, 2022
• Wallraf's books - Historic Historical Library being restored: WDR 5 Scala, June 14, 2021
• Wallraf's books - Historical volumes are being restored: WDR 3 Mosaik, 9.6.2021
• "Exhibitions in the USB" Interview for the program "Nachdurst" Kölncampus on March 20, 2015
• Hermann Corsten: Library director during the Nazi era, interview. Dom-Radio on January 27, 2013
• Interview on the exhibition "Collectors, Citizens, Patrons" in the University and City Library of Cologne. Campus-Radio, September 2012
• Elise and Helene Richter. Radio play documentary: ÖR 1, November 9, 2010
• Book traces. The fate of Elise and Helene Richter and their library in the "Third Reich". Interview. WDR 3, March 5, 2010

Readings

• Reading from "Bibliotheksdirektor im Nationalsozialismus" at the University of Cologne
• Reading from "Bücherspuren". The other bookshop in Cologne-Sülz