The papers consist of correspondence, exhibition catalogs, reports, newspaper clippings, publicity releases, photographs and art work relating to the artistic career of Ostrowsky as well as to his involvement with the Educational Alliance. Correspondence with museums such as the Baltimore Museum of Art, the U.S. National Museum, Library of Congress, Metropolitan Museum of Art, Bezalel Museum in Jerusalem, Tel Aviv Museum, pertaining to sales and exhibitions of Ostrowsky's works. Correspondence with Stanley M. Isaacs, president of the Educational Alliance, and Edith Isaacs. Materials on Stanley Isaac's political career 1937-1961. Correspondence with the alumni of the Art School including the Soyer brothers, Leonard Baskin, Elias Newman, Chaim Gross, Peter Blume and Sir Jacob Epstein. Correspondence of the Educational Alliance Art School. Reports on the Art School's activities, lecture announcements, exhibitions. Ostrowsky's lectures on Elementary Drawing. Materials relating to exhib itions and art sales held at the Educational Alliance. Correspondence with Maurice Glickman, Jacob Epstein. Materials on the student organization of the Art School, The Palette Club. Correspondence with the American Federation of Arts, with various art councils and neighborhood settlement schools. Materials on the National Federation of Settlements. Materials on the various art programs of organizations affiliated with the United Neighborhood House. Exhibition catalogs. Original drawings by Ostrowsky in pencil as well as in pen and ink. Works include prints and etchings of Maine and France and of the excavations for New York's Second Avenue Subway as well as a portrait painting of Abraham Liessin. Photographs of the Educational Alliance and University Settlement: students' art works; students and faculty including Abbo Ostrowsky, Chaim Gross, Jacob Epstein, Peter Blume. Clippings pertaining to Ostrowsky's career, the school, well known alumni. Manuscr Os trowsky. Diary entries, 1924.