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. His poem honoring Indira Gandhi was given to her son, Rajiv Gandhi, then the Prime Minister of India, who had it published in the April 1987 issue of "Congress Varnika", the magazine of the then-ruling Congress Party. But his greatest love was Shakespeare, LaRouche's views about whom Kronberg disputed.