Las Vegas Sun

Dewey Decimal System still most common, but some libraries using updated classification

Dewey Decimal System Day today marks the birthday of librarian Melvil Dewey and celebrates the library classification system ...
insider.si.edu

Dewey decimal classification and relative index

First published anonymously in 1876 under title: A classification and subject index. 2d-14th editions published under title: Decimal classification and relativ index ...