Research work in Swedish Church History of the Vasa period, (1523–1654), i.e. the period of the reformation and early orthodoxy, carried on during the two decades from 1918 to 1938, was exhaustively reviewed by Hjalmar Holmquist in ‘Forschungen zur Kirchengeschichte Schwedens in der Wasazeit (1523–1654). Sammelbericht über die Epoche 1918–1938’ (Archiv für Reformationsgeschichte, ed. G. Ritter, No. 36, Leipzig 1939). Swedish research in Church History for the period 1914–20 is listed by G. Krüger in his article ‘Literature on Church History in Germany, Austria, Switzerland, Holland and the Scandinavian Countries, 1914–1920’ in the Harvard Theological Review, xiv. (1921), xv. (1922), xvii. (1924), and xviii. (1925). The list of literature for Sweden was contributed by H. Pleijel of Lund.