5 Hnadwritten and hand-signed letter by Rav Avraham Yitzchak Ha-Cohen Kook, four of them on staionery of Chief Rabbi for Eretz Yisrael. Jerusalem, the 1920's.
Letter of invitation by Rav kook, with handwriting of another person, 1921; letter to an association in Jerusalem, 1924; two-page letter to :our brothers Ohavei Tzion ve-Yerusaleyim", 1925; letter to the world center of "Ha-Mizrachi", 1928; telegram to Va'ad Ha-Shchita in Jerusalem, 1930.
Varying sizes and conditions.