I believe that first priority should be given to:
Many of these articles already exist, but are written from a computer science point of view, and need to be expanded to include other formats.
The information profession: American Library Association -- Information -- Library -- Librarian -- Library and information science -- Library management
Information formats: Analogue disc record -- Book -- Braille book -- CD-ROM -- Codex -- Compact audio cassette -- Compact disc -- Database -- Ebook -- Information architecture -- Internet -- Laser disk -- Manuscript -- Map -- Microfiche -- Microfilm -- Microprint -- Pamphlet -- Paper -- Photograph -- Recorded book -- Scroll -- Sheet music -- Videotape -- Web site
Types of publications: Almanac -- Atlas -- Comic book -- Dictionary -- Encyclopedia -- Gazetteer -- Graphic novel -- Journal -- Lexicon -- Magazine -- Newspaper -- Reference work -- Serial -- Series -- Telephone directory -- Thesaurus
Selection and acquisition of library materials: Bradford's law -- Children's literature -- Information explosion -- ISBN -- ISSN -- Library acquisitions -- Library collection development -- Literature -- Young adult literature
Catalogs and indexes: AACR2 -- Authority list -- Catalog -- Cataloguing -- Classification -- Collation -- Colophon -- Dewey Decimal classification -- Index -- Library of Congress classification -- MARC -- OCLC -- Subject -- WorldCat
Electronic information storage and retrieval: Boolean operator -- Digital library -- Expert system -- Fuzzy logic -- Geographic Information System -- Human-computer interaction -- Information retrieval -- Information science glossary of terms (to be incorporated into separate articles) -- Invisible web -- Keyword -- Knowledge management -- Metadata -- Precision -- Recall -- Record
Research methods: Bibliographic instruction -- Bibliography -- BibTeX -- Genealogy -- How to find a book -- Library reference collection -- Library reference desk -- Library reference service -- Research
Other library services and processes: Interlibrary loan -- Library circulation -- Library circulation desk -- Library technical services
Library buildings and systems: Beinecke Rare Book and Manuscript Library -- Bodleian Library -- British Library -- Escorial Library -- Esperanto library -- Montagu Butler Library -- Public library -- Robarts Library -- University Library (Cambridge)
Digital libraries: Aozora bunko -- l'Association des Bibliophiles Universels --Bibliotheca Universalis -- Christian Classics Ethereal Library -- The Cochrane Library -- Digital library -- Distributed Proofreaders -- ibiblio -- Library of Congress Digital Library project -- List of digital library projects -- Million Book Project -- Online Book Initiative -- Online Books Page -- Perseus Project -- Project Gutenberg -- Project Runeberg -- Project Sugita Genpaku
Preservation: Archive -- Archivist -- Book preservation -- Data preservation -- Mass deacidification -- Slow fires
Social and legal issues: Banned books -- Censorship -- Copyright -- Freedom of Information Act -- Information access -- Intellectual freedom -- Intellectual property -- Literacy -- United States v. Tasini -- USA PATRIOT Act
People: List of librarians -- Melvil Dewey -- Seymour Lubetzky
Organizing and searching Wikipedia: Wikipedia:Common words, searching for which is not possible -- Wikipedia:How to explore Wikipedia -- Wikipedia:Naming conventions (and its subpages) -- Wikipedia:Searching