Dewey Decimal Charts and Graphs for JaninePelfrey
The numbers are from the Dewey Decimal System® (DDC®). The wordings are from the Melvil Decimal System (MDS), which is like Dewey but not under copyright.
The MDS Spectrum is a representation of a library based on the distribution of books within MDS classes. Each color represents a set of books within a top-level class. MDS, The Melville Decimal System, is a free version of OCLC's Dewey Decimal System®.
Top Level
0XX: Computer science, information & general works
1XX: Philosophy & psychology
2XX: Religion
3XX: Social sciences
4XX: Language
5XX: Science
6XX: Technology
7XX: Arts & recreation
8XX: Literature
9XX: History & geography
Legal Notice: "Dewey", "Dewey Decimal Classification" and "DDC" are registered trademarks of OCLC, who also claim all sorts of copyrights in the system, which is ridiculous considering that Melvil Dewey published his system in 1876, when Ulysses S. Grant was president. Nevertheless, OCLC has more lawyers than LibraryThing, and a penchant for suing to defend their control of library data, including Dewey, so we're posting this legal, if rather disrespectful, notice. The Melvil Decimal System, LibraryThing's effort to get around OCLC's control of Gilded-Age metadata is not a registered trademark.