A compilation of secondary literature up to the year 1970 is provided by:
Wilhelm Hammer,
Die Melanchthonforschung im Wandel der Jahrhunderte. 4 vols., Gütersloh 1967–1996 (Quellen und Forschungen zur Reformationsgeschichte 35. 36. 49. 65).
The most important research contributions published between 1970 and 1990 are listed in:
Heinz Scheible, article “Melanchthon, Philipp (1497–1560)”, in: Theologische Realenzyklopädie (TRE), ed. by Gerhard Müller, vol. 22, Berlin – New York 1992, pp. 371–410, especially pp. 397–410.
A bibliographical description of contemporaneous prints of Melanchthon’s works can be found in:
Helmut Claus, Melanchthon-Bibliographie 1510–1560. 4 vols., Gütersloh 2014 (Quellen und Forschungen zur Reformationsgeschichte 87).
A special bibliography concentrating on Melanchthon’s speeches can be found in:
Horst Koehn, Philipp Melanchthons Reden. Verzeichnis der im 16. Jahrhundert erschienenen Drucke, Frankfurt/Main 1985; published as well in: Archiv für Geschichte des Buchwesens 25 (1984), col. 1277–1486.
The bibliography is still in the development stage. Should you know of a publication that merits being included, we would be happy to hear from you by e-mail.
Due to identical names, some authors may be linked incorrectly with Wikipedia. Unfortunately this is currently beyond our control.