A group of c. 14 letters by American Rabbis, all written to Rabbi Joseph Rosen. Including: Autograph Letter Signed by Rabbi Jacob Bauman. Responsa and soliciting funds for the family of the late R. Shlomo Poliachik (the Maitziter Illui). Los Angeles, 1929. * Autograph Letter Signed by Rabbi Menachem Yehudah Guzik. Concerning spelling of a name on a Get, with two documents appointing a messenger to deliver a Get. New York, 1931. * Autograph Letter Signed by Rabbi Joseph Borowski. Request to write an article for his Torah journal. Brooklyn 1933. * Autograph Letter Signed by Rabbi Abraham Aaron Yudelewitz. * Four Autograph Letters Signed by Rabbi Dov Revel of Yeshiva University. Inviting Rabbi Rosen to deliver a eulogy for his colleague the Maitziter Illui) and to attend various meetings and committee appointments. * And others.
