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On December 10th, we'll celebrate Melvil Dewey's birthday and the invention of Dewey Decimal Classification — one of the most widely used library classification systems.

DDC has been in use since 1876 when Dewey, a 21 year old librarian from New York, created and established it in effort to simplify library organization. The numerical system is divided into ten main categories, ranging from general works (0-99), to language (400s), to history and geography (900s). Focusing on mostly non-fiction publications, the DCC continues to be updated and expanded to keep it current and progressive. Today, libraries in over 135 countries use the DDC system to organize their collections.

So celebrate on Saturday by heading to your local library, testing out your DDC knowledge, and getting lost in a good book (versus rows and rows of library shelves — thanks, Dewey)!