Pre-WW2 propaganda like W. Lewis's "The Jews: Are They Human?" to discourage resistance to influx of European Jew refugees to British Isles, USA &c. and a counterblast to A.H. Lane's "The Alien Menace" and W.H. Wilkins' "The Alien Invasion".
NB promotes the Khazar falsehood disproved by e.g. Mourant's "Genetics of the Jews", 1978.