US Holocaust Memorial Museum
U.s. Holocaust Memorial Museum: The Art and Politics of Arthur Szyk
Internationally known artist Arthur Szyk detailed illustrations of Jewish themes. During WWII, he drew numerous cartoons and cariacatures of Nazi Germany.
Library of Congress
Loc: Arthur Szyk: Artist for Freedom
A great biographical site on the caricaturist and cartoonist Arthur Szyk (1894-1951 CE). There are nice images of religious, war, political and personal caricatures.