Stamps of Rabbi Eliyahu Dovid Slatky and two of his signatures in English [!]. Rabbi Eliyahu Dovid Slatky (d.1980) was the son of noted kabalist Rabbi Aharon Avraham Slatky. He was a genius in nigla and nistar, Rosh Yeshiva of the Sha’ar HaShamayim Yeshiva, and the author of many noted kabalistic works.