 In 1978, he founded World Composition Services, which typeset material for LaRouche; according to Klein, Kronberg's companies also worked for other clients such as the United Nations and the Ford Foundation, as "low-cost printing" for LaRouche in reality often meant "free printing".According to a memorial posted on a LaRouche website, Kronberg also played a leading role in promoting the ideas of Heinrich Heine and the Yiddish Renaissance.He did research, wrote, and taught classes on the English scientist William Gilbert, and on the Roman Empire.