Class A: General Works is a classification used by the United States Library of Congress Classification system. This article outlines the subclasses of Class A.
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AC – collections. series. collected works
1–999......Collections; Series; Collected works
- 1–195..........Collections of monographs, essays, etc.
- 1–8...........American and English
- 9-195.......Other languages
- 200.............Collections for Jewish readers
- 801–895......Inaugural and program dissertations
- 901–995......Pamphlet collections
- 999.............Scrapbooks
AE – encyclopedias
1–(90)......Encyclopedias
- 5–(90)......By language
AG – dictionaries and other general reference works
2–600......Dictionaries and other general reference works
AM – museums; collectors and collecting
1–(501)......Museums; Collectors and collecting
- 10–100........By country
- 111–160.......Museology. Museum methods, technique, etc.
- 200–(501)......Collectors and collecting
AS – academies and learned societies
1–945......Academics and learned societies
- 2.5-4.........International associations, congresses, conferences, etc.
- 11–785......By region or country
AY – yearbooks; almanacs; directories
10–2001......Yearbooks; Almanacs; Directories
- 10–29..........Annuals
- 30-1730......Almanacs
- 2001............Directories. General works on the compilation of directories, etc.
AZ – history of scholarship and learning; the humanities
(20)–999......History of scholarship and learning; the humanities
- 101–(181)......Philosophy; Theory
- 191–193.........Evaluation
- 200–361.........History
- 501–908.........By region or country