Columbia subject headings:
Habad.
Rabbis--Correspondence.
Schneerson, Menachem Mendel, 1902-1994--Correspondence.
Harvard subject headings:
Habad
Hasidism.
Rabbis--Correspondence
Princeton subject headings:
Habad.
Jewish sermons, Hebrew.
Rabbis--Correspondence.
Schneerson, Menachem Mendel, 1902-1994--Correspondence.