The library sought to arrange its collections on that model into the 19th century. As the number of books and libraries grew, a more systematic approach was needed.

For many years, the Library of Congress categorized many of its books under a controversial subject heading: “Illegal aliens.” But then, on March 22, 2016, the library made a momentous ...

It’s almost always a book in a narrow range of content—the Library of Congress classification HQ, treating sex and family topics—that is mistakenly made available to unready kids.

The Library of Congress classification has included call numbers for books related to homosexuality since at least the 1920s, originally under the rubric of Abnormal Sex Relations, while the Dewey ...

She helped edit and index many books published by the Library of Congress and co-wrote "Women of the Suffrage Movement" (2006) with Janice E. Ruth.

It's almost always a book in a narrow range of content — the Library of Congress classification HQ, treating sex and family topics — that is mistakenly made available to unready kids.