LIBRARY OF CONGRESS CLASSIFICATION OUTLINE 

CLASS Z - BIBLIOGRAPHY. LIBRARY SCIENCE.
 

INFORMATION RESOURCES (GENERAL)
 

(Click each subclass for details) 

Subclass Z Books (General). Writing. Paleography. Book industries and 

trade. Libraries. Bibliography 

Subclass ZA Information resources (General) 
Subclass Z 

Z4-115.5 Books (General). Writing. Paleography 

Z4-8 History of books and bookmaking 

Z40-104.5 Writing 

Z41-42.5 Autographs. Signatures 

Z43-45 Calligraphy. Penmanship 

Z48 Duplicating processes. Copying services 

Including mimeographing, multilithing 

Z49-51.5 Typewriters. Typewriting. Keyboards. Keyboarding 

Z52-52.5 Word processing 

Z53-102 Shorthand. Stenography. Phonography 

Z102.5-104.5 Cryptography. Ciphers. Invisible writing 

Z105-115.5 Manuscripts. Paleography 

Z116-659 Book industries and trade 

Z116.A2 Treatises on the modern printed book 

Z116.A3 Book design 

Z116.A5-265.5 Printing 

Z124-228 History 

Z231-234 Printers and printing establishments 

Z234 Medallic history of printing. Tokens 

Z235-236 Printer's marks, mottoes, etc. 

Z237 Paper. Watermarks, etc. 

Z240-241.5 Incunabula. Block books 

Including broadsides, playing cards 

Z242.9-264.5 Practical printing 

Including printing as a business, layout, paper and ink, 

machinery, type and type founding, electrotyping, 

desktop publishing, typesetting, presswork 

Z265-265.5 Representation or reproduction of books, documents, 

etc., by photography, microphotography, or other 

means 

Z266-276 Bookbinding. Book decoration 

Z278-549 Bookselling and publishing 

Z551-656 Copyright 

Z657-659 Freedom of the press. Censorship 

Z662-1000.5 Libraries 

Z662-664 Collections 

Z665-718.8 Library science. Information science 

Z668-669.7 Library education. Research 

Z672-Z672.13 Library cooperation and coordination 

Z674.7-674.83 Library information networks 

Z675 Classes of libraries 

Z678-678.88 Library administration and organization. Constitution 

Z678.89-678.892 Library service agencies 

Z678.9-Z678.93 Automation 

Z679-680 Library buildings. Library architecture 

Including planning, space utilization, security, safety, 

lighting, etc. 

Z680.3-680.6 Library communication systems 
Z681-681.3 Reproduction of library materials. Storage media of 

library materials 

Z681.5-681.7 Trustees. Library boards, committees, etc. 

Z682-682.4 Personnel 

Z683-683.5 Finance. Insurance 

Z684-685 Supplies. Shelving. Bookstacks 

Z686 Branches. Delivery stations. Bookmobiles 

Z687-718.85 The collections. The books 

Z688 Special collections 

Z688.5-Z688.6 Processing 

Z689-689.8 Acquisition (selection, purchase, gifts, duplicates) 

Z690 Exchanges 

Z691-692 Special classes of materials 

Including manuscripts, maps, microforms, serials 

Z693-695.83 Cataloging 

Z695.85 Library handwriting 

Z695.87 Printing of catalogs 

Z695.9-695.94 Indexing. Abstracting 

Z695.95 Alphabetizing. Filing 

Z695.98 Recataloging. Reclassification 

Z696-697 Classification and notation 

Z698 Shelflisting. Author notation 

Z699-699.5 Machine methods of information and retrieval. 

Mechanized bibliographic control 

Z699.7 Physical processing. Shelf preparation 

Z700 Bookbinding 

Z700.9-701.5 Physical parameters, preservation, conservation and 

restoration of books and other library materials 

Z702 Thefts and losses of books and other library materials 

Z703.5 Stack management. Disposition of books on shelves, 

etc. 

Z703.6 Discarding. Weeding 

Z711-711.95 Public services. Reference services 

Z712-714 Circulation. Loans. Charging systems 

Z716-716.15 Library extension. Library commissions. Traveling 

libraries 

Z716.2-718.85 Libraries in relation to special topics 

Including libraries and community, libraries and 

television, children's libraries, libraries and 

students 

Z719-723 Libraries (General) 

Z729-875 Library reports. History. Statistics 

Z881-977 Library catalogs and bulletins 

Z987-996.3 Book collecting 

Including bibliophilism, bookplates 

Z997-997.2 Private libraries 

Z999-1000.5 Booksellers' catalogs 

Z1001-1121 General bibliography 

Z1001 Introduction to bibliography. Theory, philosophy, 

psychology. Bibliography. Documentation 

Z1003-1003.5 Choice of books. Books and reading. Book reviews 
Z1003.8-Z1004 Biography of bibliographers 

Z1011-1017 General bibliographies 

Z1019-1033 Special classes of books 

Including prohibited books, rare books, paperbacks, 

reprints 

Z1035-1035.9 Best books 

Z1036 Booksellers' general catalogs of modern books 

Z1037-1039 Books for special classes of persons, institutions, etc. 

Z1041-1107 Anonyms and pseudonyms 

Z1201-4980 National bibliography 

Z1201-1946 America 

Z1215-1363 United States 

Z1365-1401 Canada. British North America 

Z1411-1939 Mexico. Central America. West Indies. South America 

Z1975 Eastern Hemisphere 

Z2000-2959 Europe 

Z3001-3496 Asia 

Z3501-3975 Africa 

Z4001-4980 Australia. Oceania 

Z5051-7999 Subject bibliography 

Subjects arranged in alphabetical sequence 

Z8001-8999 Personal bibliography 

Names of individuals arranged in alphabetical sequence 
Subclass ZA 

ZA3038-5190 Information resources (General) 

ZA3150-3159 Information services. Information centers 

ZA3201-3250 Information superhighway 

ZA4050-4775 Information in specific formats or media 

ZA4050-4480 Electronic information resources 

ZA4150-4380 Computer network resources 

ZA4450-4460 Databases 

ZA4550-4575 Motion pictures. Video recordings 

ZA4650-4675 Pictures. Photographs 

ZA4750-4775 Sound recordings 

ZA5049-5190 Government information