Technology and libraries How we got to where we are

Gutenberg Press

What do we do with them now that we have them?

Jefferson’s library catalog

Melvile Dewey

Dewey Decimal System

Library of Congress Classification System A General WorksGeneral Works B Philosophy, Psychology, and ReligionPhilosophy, Psychology, and Religion C Auxiliary Sciences of HistoryAuxiliary Sciences of History D General and Old World HistoryGeneral and Old World History E History of AmericaHistory of America F History of the United States and British, Dutch, French, and Latin AmericaHistory of the United States and British, Dutch, French, and Latin America G Geography, Anthropology, and RecreationGeography, Anthropology, and Recreation H Social SciencesSocial Sciences J Political SciencePolitical Science K LawLaw L EducationEducation M MusicMusic N Fine ArtsFine Arts P Language and LiteratureLanguage and Literature Q ScienceScience R MedicineMedicine S AgricultureAgriculture T TechnologyTechnology U Military ScienceMilitary Science V Naval ScienceNaval Science Z Bibliography, Library Science, and General Information ResourcesBibliography, Library Science, and General Information Resources

Library of Congress Subject Headings 1898-present

LCSH Entry

Bibliotheque Nationale de France, Paris, France Where it all started in 1789

Card catalog circa 1960

Catalog Card

Authority records

National Union Catalog

Bibliographic databases Major distinction between databases dealing with words and those dealing with numbers Libraries on the forefront of creating bibliographic databases

Henriette Avram creator of the MARC record

Standard MARC record

MARC record from GU catalog

GU library catalog record

Reader’s Guide to Periodical Literature 1901-

Reader’s Guide entry

“Old School” database searching

Database search 1970s-2000s B 1 Ss ((academic achievement/de or grades/de) and (admission/ti or college w/3 placement) ) S1 245 S1 and py= S2 23 S2 and la=en S3 20 T 3/ti,au,de,ab,so/1-20

Precision vs. Recall Use of subject headings makes a search more precise but limits recall Use of free text terms and general searches such as in Google enhance recall but limit precision Libraries typically value precision over recall

Foley DB access ies/Foley-Library/default.asp ies/Foley-Library/default.asp

Bibliographic Utilities RLG WLN OCLC