Sigmund Freud (18561939). Group Psychology and the Analysis of the Ego. 1922.
A COMPARISON of the following pages with the German original (Massenpsychologie und Ich-Analyse, Internationaler Psychoanalytischer Verlag, Vienna, 1921) will show that certain passages have been transferred in the English version from the text to the footnotes. This alteration has been carried out at the authors express desire.