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Dewey® Services

Background

Melvil Dewey was one of the most influential librarians of his day and is still one of the most recognized names in librarianship.




Licensing

Since 1988, OCLC has held the trademark on the Dewey name.

If you have interest in licensing the Dewey name for a legitimate business purpose, please contact OCLC first. We have established licensing arrangements that enable other organizations to use the Dewey name while protecting OCLC's trademark rights.

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Learn more about organizing your materials with the world's most widely used library classification system.


The Dewey blog is a great source for news and views on classification issues, as well as interesting and unusual DDC resources and curiosities. It's also a convenient way to share feedback directly to the DDC editors to help shape the future of the DDC.

Past and recorded events

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All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, and WebDewey are registered trademarks of OCLC.