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Searches for Library of Congress Control Numbers (LCCN), International Standard Book Numbers (ISBN), and International Standard Serial Numbers (ISSN). Numbers must be entered in exact order beginning with the first character.
Browse Options. Browse offers four types of searches: Searches against controlled lists of authors/creators, subjects, names/titles, and series/uniform titles used by the Library of Congress - along with cross-references. These controlled terms are referred to as "authorized headings."
The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 162 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.
Keyword Search All Fields, Title, Author/Creator, Subject, Expert.
The Prints and Photographs Online Catalog (PPOC) contains catalog records and digital images representing a rich cross-section of still pictures held by the Prints & Photographs Division and, in some cases, other units of the Library of Congress.
Use the online catalog to search the Library's collections by keyword or browse materials by subject, title, author & more. While much of our content is available in digital format, a majority of the collections have not yet been digitized.
All available connections to the LC Catalog are currently in use.
