Treasures await students and researchers on the shelves of libraries and archives across the country, but unfortunately they often remain unknown to the "modern" researcher who limits his/her research to using the Internet. The process of physically going to the library stacks and browsing the shelves in a subject area is on the decline and more and more students expect that all their research can be done on-line at home. The privilege of browsing the stacks in a special library or archive is usually unavailable to the majority of undergraduates, but finding "hidden history" is still possible when students are provided with the proper research skills necessary to locate materials in libraries and archives. In this article, the author discusses the importance of having students learn the skills of using a library, a catalog, or an archive finding aid. The author describes how the Baruch College of the City University of New York, which has been a pioneer in library education for undergraduates since the 1970s, can serve as a good model for how archivists can teach these skills. The author also describes the course entitled "Archives, Documents, and Hidden History," which she developed to help students learn library research skills. (Contains 19 notes.)