Catalog data are a library's most important map to knowledge. What does it mean that the Library of Congress just released 25 million records to the public?

Object Details Author Library of Congress Subject Cataloging Division Notes "The additions and changes in Class Q, adopted while this work was in press will be cumulated and printed in List 234 of LC ...

They've just used a game called Within Range to ... teach the Dewey Decimal System. [Update: It's the Library of Congress classification system.

In the 1890s, the library developed the Library of Congress Classification System. It is still used today to predictably manage millions of items in libraries worldwide. Catalogs, cards and computers ...

In the 1890s, the library developed the Library of Congress Classification System. It is still used today to predictably manage millions of items in libraries worldwide.

In the 1890s, the library developed the Library of Congress Classification System. It is still used today to predictably manage millions of items in libraries worldwide. Catalogues, cards and ...