Thanks for that quotation and information, Mr. Hershman -- concerning antisemitism in the 1940s (although the fact remains that my grandfather had 2 brothers (1 of whom I met decades later -- after I was born in 1961) who never changed their family name) in he United States.
I didn't mention earlier a quite-interesting book by a researcher named Kirsten Fermaglich (published in 2018) about (mostly) American Jews and name changing in the 20th century (as I seem to recall from the book, there may well have been a peak in the interwar years or in the 1940s; there was a decline in my lifetime) -- largely based on research into court records in New York City entitled A Rosenberg by Any Other Name: A History of Jewish Name Changing in America.
(The book does tell of continuing employment and college-admissions discrimination in the 1940s -- before things changed for the better in this country.)
Ethan W. Kent
New York City.