Bibliographers, archivists, and librarians supply the materials without which the work of historical scholars would not be possible. Yet too often, their enterprise is simply taken for granted. We forget that the vocations in which they engage possess their own history and that their most outstanding practitioners deserve remembrance when we write of the development of Jewish scholarship. At Hebrew Union College, Jacob Rader Marcus and Herbert Zafren used to give a course for graduate students on Jewish bibliography, displaying and discussing all of the classical works in the field from the seventeenth century onward. The orientation it gave the students was invaluable. Today, we have the two very helpful volumes by Shimeon Brisman—A History and Guide to Judaic Bibliography (1977) and A History and Guide to Judaic Encyclopedias and Lexicons (1987)—yet I wonder how many graduate students have looked at them carefully.