Robert, I warmly recommend the book "Good Living Street" by a fellow Australian writer - Tim Bonyhady -
about the life of a rich convert family in pre WW2 in Wien.
and though the conversion took place much earlier, in the 19th century -
Researching (main surnames):
From Austria, Slovakia: LOFFLER / LEFLER, LEDERER, SCHNEIDER, NATHAN, SEELENFRIED, ZAPPERT.
From Bukowina, Galicia: MINSTER / MUNSTER, NAGEL, SCHERL, IWANIR.
From Poland / Belarus: ALTMAN, KAMINSKY, KAMINKIER, LUBETKIN, SZTARK, YOSELEWICZ, KOSLOWSKI, KRAMARZ, RAUCHFELD.