"The multitude of Jewish options that existed before World War II are ones which most nonobservant U.S. Ashkenazi Jews are hardly familiar with, much less recognize...Before World War II many Yiddish-speaking European Jews were already rejecting observance and secularism. Eager to assimilate, they deliberately abandoned their Jewish language and culture. The well-known letters (Bintl Brif) of Der forverts (The Jewish Daily Forward), the thirties English stories of Anzia Yezierska, and the more modern forties and fifties Yiddish stories of Kadia Malodowsky describe this assimilation minutely."
January 1, 1970
https://en.wikiquote.org/wiki/Irena_Klepfisz