The Rebbe acknowledges receipt of the Pidyon Nefesh for Yud-Tes Kislev and offers blessings. He encourages strengthening in Torah and spreading Chassidus, addresses a query on Torah letters, advises consulting family on a matter, and requests details on Kehot’s book redemption expenses.
https://www.torahrecordings.com/rebbe/004_igros_kodesh/kislev/830