Webster University Library uses the Library of Congress Classification System (LC) to arrange materials on the shelves.

Visit the How to Read Call Numbers in an Academic Library page for detailed information.

The call number for a book begins with a letter (representing its class) or letters (representing a subclass):

• A – General works (for example, encyclopedias)
• B – Philosophy, Psychology, and Religion
• C – Auxiliary sciences (for example, biography, genealogy)
• D – History (except America)
• E to F – History of the Americas
  • F 461 to 475 – Missouri history
• G – Geography, Anthropology, Folklore, Dance, Sports
• H – Social Sciences (general)
• HA – Statistics
• HB to HJ – Economics, Finance, and Business
• HM to HX – Sociology, Marriage and Family, Criminal Justice
• J – Political Science
• K – Law
  • KF – U.S. law
  • KFM 7800 to 8399 – Missouri law
• L – Education
• M – Music
• N – Fine Arts
• P – Philology and Literature
  • P to PA – Philology and Classical Literature
  • PB to PH – Modern European Languages
  • PJ to PM – Languages and Literatures of Asia, Africa, Oceania, America; Mixed Languages; Artificial Languages
  • PN – Literature (general), Drama, Poetry, Film
  • PQ – French, Italian, Spanish, Portuguese
  • PR – English Literature
  • PS – American Literature
  • PT – German, Dutch, and Scandinavian
  • PZ – Fiction (general) and Juvenile Literature
• Q – Science
• R – Medicine
  • RC – Psychiatry
  • RT – Nursing
• S – Agriculture
• T – Technology
• U – Military Science
• V – Naval Science
• Z – Bibliography and Library Science