Ephraim Deinard (1846–1930) was one of the greatest Hebrew "bookmen" of all time. He was a bookseller, bibliographer, publicist, polemicist, historian, memoirist, author, editor, and publisher, all rolled into one. Deinard produced some 70 volumes whose subjects range from Jewish history and antiquities (especially of the Crimea, Russia, America, and The Holy Land), to treatises against Hasidism, Christianity, and Communism, parodies, medieval and modern Hebrew literature, Jewish religion, and especially booklore. Deinard's antiquarian activities, which involved constant travel throughout Europe, the Orient, and America, gave him a unique acquaintance with scholars, private collectors, fellow booksellers, and libraries. He came into contact and conflict with numerous Hebrew writers and Jewish communal and political figures. His wide-ranging knowledge and experience are fully reflected in his own voluminous writings, mostly in Hebrew, produced over more than half a century. His scope of interests, the intensity of his sentiments, the acerbity of his remarks, all coupled with his bibliophily, render Deinard's works a source of contemporary Jewish historical and literary controversy, as seen in the margins of the Hebrew-reading world, before and after World War I. Publisher Devoted to many periods and genres of Hebrew literature, Deinard published, aside from new or revised editions of early polemical tracts, various medieval and modern Hebrew texts, works by American Hebrew authors, and sharp critiques of modern Hebrew writing. Involved in Hebrew journalism since his youth, Deinard made several brief attempts to publish his own journals, including one of the first Hebrew papers in America, and a Zionist Yiddish paper in Newark, New Jersey, of which no copy survives. Deinard did not neglect Yiddish, and in the time he lived in Odessa, he published both Hebrew and Yiddish works by the Podolian-born historian and belletrist M. N. Litinsky. Some Yiddish texts appear in his Hebrew books, and he deals with Yiddish in his catalogs and bibliographies. One of his last books, Devir Efrayim, which was published just after the founding of the Yiddish Scientific Institute (YIVO) in 1925, contains a chapter on Yiddish. His books were printed in eleven towns in Europe, Ottoman Palestine, and America, including Odessa, Pressburg, Warsaw, Vienna, New York City, Newark, Kearny, Jerusalem, Jaffa, St. Louis and Arlington. In his time Deinard was the most prolific Hebrew author-publisher in New Jersey. At the end of his career, Deinard had sixteen volumes printed at the Moinester Press in St. Louis, more than he had