The Dewey Decimal System, a subject classification system used in libraries.
The first library school in the United States was established by Melvil Dewey (the originator of the Dewey decimal system) in 1887 at Columbia University.
In 1893 the library moved to the second floor of the new Village Hall in 1893 and the library's collection was reorganized according to the new Dewey Decimal Classification system in 1896.
Rider attended New York State Library School in 1907, but left before graduating to help his mentor, Melvil Dewey, on a revision of the latter’s Decimal Classification system.
Köppen climate classification | John Dewey | British undergraduate degree classification | British Board of Film Classification | Dewey Redman | George Dewey | Dewey | Melvil Dewey | Points classification in the Vuelta a España | Mountains classification in the Giro d'Italia | Dewey Martin | Biological classification | Race (classification of human beings) | Dewey Decimal Classification | Bordeaux Wine Official Classification of 1855 | Stellar classification | Matthew Dewey | Mathematics Subject Classification | Library of Congress Classification | Classification of discontinuities | Thomas E. Dewey | Race (human classification) | Office of Film and Literature Classification | Dewey Commission | Classification of Champagne vineyards | Young rider classification in the Tour de France | Yosemite Decimal System | Walk Hard: The Dewey Cox Story | Settlement classification in Mexico | Office of Film and Literature Classification (Australia) |
The hotel boasts a unique organizing principle: each of its ten guest floors has a theme, designated after a major category of the Dewey Decimal Classification (the 5th floor, for example, is the 500s, the Sciences), with each room as a subcategory or genre, such as Mathematics (Room 500.001) or Botany (Room 500.004).
Because of this classification scheme, the hotel owners were sued in 2003 by the OCLC (owners of the Dewey Decimal Classification system).