New York: Wiley, 1948. Seconnd printing (first was in 1947). Octavo, navy cloth. xii, 212 pp. Ink name and date to front free endpaper; yellowing to page edges and endpapers; near fine jacketless copy otherwise, no marks in text, of this historically quite important statistics text in which Wald, a Viennese mathematician who fled the Nazis, developes his new technique of sequential analysis. "Most, although not all, of [Wald's] results were summed up in Sequential Analysis (1974). With minor exceptions, the entire contents of this book were obtained by him. Such a phenomenon is rare in mathematical books and indicates the extent to which he founded and dominated the field of sequential analysis" (DSB).