The Judaica-Hebraica Unit is headed by the Irving M. Hermelin Curator of Judaica, the first endowed position at the University of Michigan Library, in the Harlan Hatcher Graduate Library. At present, this collection includes some 53,600 titles in Hebrew and Yiddish, while Western language Judaica holdings number approximately 43,000. The collection is particularly strong in Modern Hebrew literature, Jewish history, the history of Israel, Judaism, and Hebrew bible studies. Annually, the library adds about 1,000 Hebrew and Yiddish titles to the collection and 1,500 Jewish studies titles in Western languages.

Notable recent acquisitions include the 5,000 title microfiche collection, Hebrew Books from the Harvard College Library; the ten-volume set Catalog of the Hebrew Collection: Harvard College Library, the Poalei Zion and Bund Archives microfiche collections; the 550 item Leo W. Schwarz Collection, which is rich in rare material on Jewish mysticism, hasidut, and publications by and for residents of post-World War II displaced persons camps in Germany; the entire runs in microformat of the Jewish Daily Forward and the Jerusalem Post and its predecessors as well as the Morgen Zhurnal from 1906 until it merged in 1953 with another Yiddish daily, Der Tog.