How can I find out if the Harvard libraries have a particular book or periodical?

Visit the web-based HOLLIS (Harvard Online Library Information System) Catalog at http://holliscatalog.harvard.edu to search Harvard's holdings of books, periodicals, e-resources, and more. For holdings of visual, geospatial, archival, or other digital materials, visit http://lib.harvard.edu/catalogs to search additional online catalogs. For more information, consult Finding Materials at Harvard.