Abstract Contains photocopies of four Hebrew letters endorsing Rabbi Rabinovitz, three of which were written by Rabbis Jacob Widrewitz, Ph. Klein and Joshua Siegel in New York in 1907. One is specifically addressed to Cong. Tzemach Tzedek and Agudas Achim of Chelsea, Mass. Also includes the photocopy of a Hebrew contract signed by ca. 50 members of the congregation in 1907, photocopies of two requests for funds from Poland, a photograph of Rabinovitz, an announcement of his son's wedding in 1925, and...