Two Autograph Postcards Signed, to Rabbi M[enachem] Kasher of Jerusalem, replete with halachic novellae as well as acknowledging receipt of Kasher's book Torah Shelemah, and requesting that Kasher publish the Rogatchover's response thereto

Rabbi Joseph Rosen (also Rozin) (1858-1936), known as "the Rogatchover" after his birthplace of Rogatchov, Belarus, was perhaps the greatest Talmudic genius of the 20th century. He had a remarkable ability for penetrating, original, analytic conceptualizations, however, his style of writing can be cryptic as he created a new halachic vocabulary to convey his profoundly original thoughts. R. Menachem Mendel Kasher (1895-198) was the founding director of the Zaphnath Pane'ach Institute of Yeshiva University, devoted to the publication of the Rogatchover Gaon's novellae, miraculously spirited out of Europe upon the onset of the Holocaust.