How can I search HOLLIS by call number?

Harvard’s libraries use upwards of 20 different call numbering systems, from Library of Congress to Old Widener to National Library of Medicine to Dewey Decimal. 

There are two options for exploring HOLLIS by call number, as explained on the HOLLIS User Guide:

Have another HOLLIS question? Our HOLLIS User Guide provides an overview of HOLLIS's features and functions.




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In observance of Memorial Day there will be no library services Saturday, May 30 through Tuesday, June 1, 2021. There may be a slight delay in our responses to inquiries received over the long weekend. If you're experiencing an ongoing technical issue when you attempt to access library materials with your HarvardKey, please report it to Library Technology Services.



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