[1] letterhead, 19×15 cm. [18] lines written and signed by the Admor of Toldot Ahron, Rabbi Dovid HaKohen Kahn, second son of the previous Admor, Rabbi Avraham Yitzchak Kahn, author of Chessed Neurayich. The letter is addressed to the ‘beloved…avreichim…who work relentlessly to elevate diligence, fear of G-d and purity…” He addresses them personally and asks them to increase Torah, “Because this is my portion in all my work, to see the glory…” Letters from this Admor are very uncommon. Very fine condition.