NA The First letter of a Library of Congress call number indicates the general class the material falls within. The numbers that follow the letter define the subject of the material.
.C## The "cutter" number is the next set of numbers separated by a period. The cutter numbers indicate the author or title of the material.
2022 The year of a publication follows the cutter number to indicate the edition.
Check out the Library of Congress Classification Outline to understand the organization of the subjects and subsections in the stacks.