Dewey Decimal Classification System

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This article originally appeared in Printed Sources: A Guide to Published Genealogical Records, edited by Kory L. Meyerink.


Introduction

Most public libraries use the Dewey Decimal Classification System, which was developed in 1873 by Melvin Dewey for the Amherst College Library in Amherst, Massachusetts. This system classifies books within ten basic groups or classes of knowledge, as shown below.

Dewey Decimal Classification System

000 Generalities
001.9 Controversial and spurious knowledge
011 General bibliographies
030 Encyclopedias
070 Journalism
100 Philosophy
150 Psychology
170 Ethics
180 Philosophy
190 Modern Western philosophy
200 Religion
220 Bible
231-239 Christianity
300 Social sciences
320 Political science
330 Economics
340
360 Social services
370 Education
380 Commerce and communication
390 Customs and folklore
398.2 Folklore and fairy tales
400 Language
420 English
430 German
440 French
450 Italian
460 Spanish, Portuguese
470 Latin
480 Greek
500 Pure sciences
510 Mathematics
520 Astronomy
530 Physics
540 Chemistry
550 Earth sciences
570 Life sciences
580 Botany
590 Zoology
600 Technology
610 Medicine
620 Engineering
630 Agriculture
640 Home economics
650 Managerial services
670 Manufacturing
690 Buildings
700 The arts
712 Landscape design
720 Architecture
730 Sculpture
745.1 Antiques
750 Painting
760 Graphic arts
770 Photography
780 Music
790 Recreation and performing arts
800 Literature
900 Geography and history
920 Biography
929 Genealogy
930 Ancient world history
940 European history
950 Asiatic history
970 North American history
980 South American history

Dewey Decimal System Numbers for Regions and States within the United States

United States 973
Within the Dewey system, states are grouped by region:
Northeastern states 974
Southeastern states 975
South central states 976
North central states 977
Western states 978
Pacific states 979
States:
Alabama 976.1
Alaska 979.8
Arizona 979.1
Arkansas 976.7
California 979.4
Colorado 978.8
Connecticut 974.6
Delaware 975.1
District of Columbia 975.3
Florida 975.9
Georgia 975.8
Hawaii 996.9
Idaho 979.6
Illinois 977.3
Indiana 977.2
Iowa 977.7
Kansas 978.1
Kentucky 976.9
Louisiana 976.3
Maine 974.1
Maryland 975.2
Massachusetts 974.4
Michigan 977.4
Minnesota 977.6
Mississippi 976.2
Missouri 977.8
Montana 978.6
Nebraska 978.2
Nevada 979.3
New Hampshire 974.2
New Jersey 974.9
New Mexico 978.9
New York 974.7
North Carolina 975.6
North Dakota 978.4
Ohio 977.1
Oklahoma 976.6
Oregon 979.5
Pennsylvania 974.8
Rhode Island 974.5
South Carolina 975.7
South Dakota 975.7
Tennessee 976.8
Texas 976.4
Utah 979.2
Vermont 974.3
Virginia 975.5
Washington 979.7
West Virginia 975.4
Wisconsin 977.5
Wyoming 978.7


Printed Sources: A Guide to Published Genealogical Records


Publication Information:

Introduction - By Kory L. Meyerink

Origin of InformationCategories of Research Sources and ToolsEvaluation of Printed SourcesDocumentation and CopyrightLearning What Printed Sources ExistPublishers and DistributorsRepositories of Printed SourcesEffective Use of Libraries and Archives

Chapter 1: General Reference - Martha L. Henderson

Unique Resources in Public LibrariesDewey Decimal Classification SystemReference SourcesEncyclopediasGeneral History SourcesSocial History SourcesAlmanacs, Chronologies, and Statistical SourcesUsing DirectoriesLocal DirectoriesPrinted Professional DirectoriesInstitutional DirectoriesDirectories of Groups and AssociationsSource GuidesGeneral Language DictionariesHistorical and Etymological DictionariesSlang DictionariesSubject DictionariesSurname DictionariesGovernment DocumentsUsing BibliographiesElectronic SourcesReferences for Printed Sources: Chapter 1

Chapter 2: Instructional Materials - Sandra Hargreaves Luebking

Introduction to Instructional MattersHow-To Guides and Manuals for AdultsHow-to Guides and Manuals for Young PeopleGenealogy Technologies and Refinement of SkillsCourses and Programs of StudyPeriodical ArticlesIdentifying and Obtaining Instructional MaterialsEvaluating Instructional MaterialsSelecting Textbooks for Classroom UseThe Future of Instructional MaterialsReferences for Printed Sources: Chapter 2

Chapter 3

Introduction to Geographic ToolsIntroduction to Maps and GazettersMapping of a New NationRoutes to the WestCanals and WaterwaysRailroadsPolitical MapsNineteenth-Century MapsUSGS Topographic MapsOrdering Topographic Map Names and NumbersOrdering Topographic MapsDigital Topographic MapsOut-of-Print Topographic MapsFact Sheets and General Interest PublicationsOther Types of USGS MapsNineteenth-Century National GazetteersTwentieth-Century National GazetteersPostal Guides and Shipping GuidesMaps, Gazetteers, and the ComputerFinding Geographic ToolsUsing Geographic ToolsReferences for Printed Sources: Chapter 3

Chapter 4

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Chapter 5

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Chapter 6

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Chapter 7

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Chapter 8

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Chapter 9

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Chapter 10

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Chapter 11

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Chapter 12

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Chapter 13

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Chapter 14

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Chapter 15

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Chapter 16

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Chapter 17

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Chapter 18

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Chapter 19

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Chapter 20

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Appendix

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