During the 19th and 20th centuries, committed scholars worked to combine research and teaching with the help of instructive material. To this end, they extended the collection and acquired further charters, manuscripts, archival records, seals and photographic images of coats of arms. In order to improve research conditions, in 2013 the collection has been catalogued systematically and entered into a digital database: http://monasterium.net/mom/DE-GAUnivGoet/archive..

Until 31 March 2007, the Diplomatic Apparatus operated as a unit of the Faculty of Humanities ("Betriebseinheit", in accordance with the Niedersächsisches Hochschulgesetz). Since 1 April 2007, the collection has been under the administration of the Seminar of Medieval and Modern History with Prof Hedwig Röckelein PhD as its director.

Past directors of the Diplomatic Apparatus:
Johann Christoph Gatterer (1759-1799), the founder of the Auxiliary Sciences of History in Göttingen and thus in Germany.
Jacob Grimm (1835-1837)
Paul Fridolin Kehr (1895-1903)
Wilhelm Meyer (1895-1917)
Karl Brandi (1902-1946)
Alfred Hessel (1924-1935)
Hans Goetting (1964-1976)

Geschichte des Diplomatischen Apparats der Universität Göttingen, in: Archivalische Zeitschrift 65 (1969), pp. 11-46; Wolfgang Petke: Diplomatischer Apparat, in: Dietrich Hoffmann, Kathrin Maack-Rheinländer (ed.), "Ganz für das Studium angelegt". Die Museen, Sammlungen und Gärten der Universität Göttingen, Göttingen 2001, pp. 82-90; Wolfgang Petke: Aus der Geschichte des Diplomatischen Apparats, in: Göttinger Jahrbuch 50 (2002), pp. 123-148; Jörg Bölling: Päpstliches Pergament mit Kriegsgekritzel. Die Nr. 1 des Diplomatischen Apparates, in: Georg-August-Universität Göttingen (ed.): Dinge des Wissens. Die Sammlungen, Museen und Gärten der Universität Göttingen, Göttingen 2012, pp. 151-153; id. (with Daniel Graepler et al.): Was die Dinge Lehren, in: ibid., pp 228-237; id.: Diplomatischer Apparat (Apparatus diplomaticus), in: ibid., pp. 284-285; Hedwig Röckelein/ Jörg Bölling, Diplomatischer Apparat, in: Die Sammlungen, Museen und Gärten der Universität Göttingen, Göttingen 2013, pp. 24-25/ Edition in English: Hedwig Röckelein/ Jörg Bölling: Apparatus Diplomaticus, in: The Collections, Museums and Gardens of Göttingen University, Göttingen 2013, pp. 24-25.