Answered By: Kristen Koob
Last Updated: Sep 24, 2018     Views: 15


HOLLIS is the Harvard Library catalog. It searches most library resources in a single unified search, including includes books, articles, media and more. HOLLIS also manages your library loans. Make sure you sign in to gain access to all features for Harvard affiliates.

Should I choose Everything or Library Catalog?

Choose Everything if:

  • You want to explore the broadest variety of sources

  • Your topic is very interdisciplinary or very current

  • You already have the title of an article you want

Choose Library Catalog if:

  • You want book-length treatments of a topic

  • You want to search Harvard's shelves

  • You need reliable filters for authors and subjects


Try these Search Operators for a better search experience:

  • Exact Phrase

Use quotation marks to search for your terms as an exact phrase. Great for title searches.

"capital in the twenty-first century"

  • Boolean Connectors

AND, OR, and NOT must be in all caps to be recognized as operators.

NSA OR "National Security Agency"

cellular NOT phone

  • Order of Operations

Use parentheses to define the order of operations.

("Affordable Care Act" OR Obamacare) AND "birth control"

  • Wildcards

? matches a single character and * matches multiple characters.


gene* therapy


Learn more at HOLLIS Help


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