we know that LC Classification is based on the subject matter of a book.
We know that it's easier to find things this way, and we've also looked
at some examples in the online catalog. This
brings us to another important part of how to find a book: the classification
other library materials are arranged according to their subject matter
to make it easier for you to find things based on their topic. The Library
of Congress system was based on a collection of over one million books
and incorporated the best parts of all the classification systems in
use at the time.
of Congress numbers always start with letters of the alphabet, which
represent the subject of the work. Books, videos, etc., are organized
according to 21 branches of knowledge, using the letters A-Z, except
I, O, W, X, and Y. The subjects can be further divided using one or
two more letters and a set of numbers.