Analysis of information sources in references of the Wikipedia article "Leib Groner" in English language version.
Leibel studied in the Lubavitch school and Yeshiva system in New York from its earliest days, and in 1949 was asked by the Rebbe - then the Ramash - to assist with some of the work of preparing Kehot publications for print. When the Rebbe assumed the leadership of Chabad, he asked Groner to assist him at farbrengens. Groner gradually assumed the role, not only of a secretary, but also an assistant who cared for many of the Rebbe's personal needs.