Libraries collect and preserve the graphic records of human experience.1 Not every experience is documented, and not every documented experience is collected and preserved. How, then, can you know what part of the historical record remains for you to study? Reference sources are your map to the graphic records of human experience.
Even if every human experience hasn't been documented, and every document hasn't been preserved, there remains a plethora of sources available for the historian to study. Here at the University of Illinois Library, you have access to over 13 million printed books, 9 million microforms, 120,000 periodicals, 148,000 sound recordings, 1 million audiovisual resources, 280,000 e-books, 29,000 cubic feet of archival records, 3 terabytes of electronic records, and 650,000 maps—that's over 24 million potential primary sources for your research. Reference sources are your map to the Library's collections.
Half of one aisle at the University Library's remote storage facility on Oak Street.
Encyclopedias attempt to summarize the state of knowledge in a field of inquiry. A good encyclopedia can be a valuable starting point for your research.
Two online reference collections that students often find useful are: Credo Reference and Gale Virtual Reference Library.
Alternate version: Academic Search Ultimate in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). A scholarly, multidisciplinary database providing indexing and abstracts for over 10,000 publications, including monographs, reports, conference proceedings, and others. Also includes full-text access to over 5,000 journals. Offers coverage of many areas of academic study including: archaeology, area studies, astronomy, biology, chemistry, civil engineering, electrical engineering, ethnic & multicultural studies, food science & technology, general science, geography, geology, law, mathematics, mechanical engineering, music, physics, psychology, religion & theology, women's studies, and other fields.