1 LIBRARY OF CONGRESS classification OUTLINE. CLASS A - GENERAL WORKS . (Click each subclass for details). Subclass AC Collections. Series. Collected WORKS Subclass AE Encyclopedias Subclass AG Dictionaries and other GENERAL reference WORKS Subclass AI Indexes Subclass AM Museums. Collectors and collecting Subclass AN Newspapers Subclass AP Periodicals Subclass AS Academies and learned societies Subclass AY Yearbooks. Almanacs. Directories Subclass AZ History of scholarship and learning. The humanities Subclass AC. AC1-999 Collections. Series. Collected WORKS AC1-195 Collections of monographs, essays, etc. AC1-8 American and English AC9-195 Other languages AC200 Collections for Jewish readers AC801-895 Inaugural and program dissertations AC901-995 Pamphlet collections AC999 Scrapbooks Subclass AE. AE1-(90) Encyclopedias AE5-(90) By language Subclass AG. AG2-600 Dictionaries and other GENERAL reference WORKS Subclass AI.
2 AI1-21 Indexes Subclass AM. AM1-(501) Museums. Collectors and collecting AM10-100 By country AM111-160 Museology. Museum methods, technique, etc. AM200-(501) Collectors and collecting Subclass AN. AN Newspapers Subclass AP. AP1-(271) Periodicals AP101-115 Humorous periodicals AP200-230 Juvenile periodicals AP(250)-(265) Periodicals for women AP(270)-(271) Periodicals for Blacks Subclass AS. AS1-945 Academies and learned societies International associations, congresses, conferences, etc. AS11-785 By region or country Subclass AY. AY10-2001 Yearbooks. Almanacs. Directories AY10-29 Annuals AY30-1730 Almanacs AY2001 Directories. GENERAL WORKS on the compilation of directories, etc. CLASS directories by subject in B-Z. Subclass AZ. AZ(20)-999 History of scholarship and learning. The humanities AZ101-(181) Philosophy. Theory AZ191-193 Evaluation AZ200-361 History AZ501-908 By region or country