In addition to general works such as Borkenau's The Communist International (1939) and G.D.H. Cole, Communism and Social Democracy (1958), the reader is referred to Trade Union Movement in Norway (1955), published by the Norwegian Trade Union Centre, and Edvard Bull, ‘Die Entwicklung der Arbeiterbewegung in den drei skandinavischen Ländern 1914-1920’, in Archiv fur die Geschichte des Socialismus und der Arbeiterbewegung, 1922, pp. 329-61. In the Norwegian language the chief work is Det norske arbeiderpartis historié I-II ed. by Halvdan Koht, (1939), covering the years up to 1924. On Mot Dag, see Trygve Bull, Mot Dag og Erling Falk (1955), and Andre Bjerke, ‘Erling Falk og hans menn’, in Vitenskapen og livet, 1958, pp. 130-51. On Ossietzky, see Arne Stai, Norsk kultur- og moraldebatt i 1930 arene (1954), pp. 75–92, and August Schou, The Peace Prize (1962), pp. 604–8. Quotation from Nordahl Grieg, Veien frem (1947), p. 89. On Trotsky's stay in Norway, see Isaac Deutscher, The Prophet Outcast, Trotsky 1929-40 (1963), pp. 292–8, 324–55 (my review of this work in Historisk Tidsskrift (1964), pp. 319–24), Helge Krog, Meninger (1944), pp. 214–64. On Nordahl Grieg, see Kjolv Egeland, Nordahl Grieg (1953), Harald Grieg, Nordahl min bror (1963), and Gerd Grieg, Nordahl Grieg-slik jeg kjente ham (1958). See also Plekhanov, ‘Henrik Ibsen’, Neue Zeit (1907), no. 3..
