MLA Directory of Periodicals (accessible also in MLA International Bibliography)
Ulrich's Periodical Directory
A searchable directory of approximately 250,000 regularly and irregularly published journals, magazines, newspapers, and full-text electronic resources from more than 200 countries. Search/browse by title, keyword, subject, ISSN or publisher; highlights of new, changed, and ceased titles.
Journal Search via OneSearch at the Pollak Library
Search journals by title or ISSN (International Standard Serial Number). Direct links articles, or Illiad Interlibrary Loan service. Example: Shakespeare Quarterly in OneSearch will link you to JSTOR (most recent six years not available) and Project Muse (available from 03/01/2001).
Journal Website. You can Google it. For example:
Shakespeare Quarterly (via Folger Shakespeare Library)