How Do I Read Library of Congress Call Numbers?
A call number is like an address; it tells you where the book is located on the shelf.
The classification system is designed to group library materials of similar subjects together and is used by many universities and colleges.
Here is a sample of items in call number order:
Read call numbers line by line
LB
Read the first line in alphabetical order:
A, B, BF, C, D... L, LA, LB, LC, M, ML...
2395
Read the second line as a whole number:
1, 2, 3, 45, 100, 101, 1000, 2000, 2430...
.C65
The third line is a combination of a letter and numbers. Read the letter alphabetically. Read the number as a decimal, eg:
.C65 = .65 .C724 = .724
Some call numbers have more than one combination letter-number line.
1991
The last line is the year the book was published. Read in chronological order:
1985, 1991, 1992...
Here is a shelf of books with the call number order explained.
*Information from the University System of Georgia
Click here for a detailed list of Library of Congress classifications. (opens in new window)
Use the library catalog to search for books on your subject, or place holds on the books listed below:
Search for books at the six Wake Tech library locations. You can also request books from community colleges across the state.
Test your library shelving skills: Kent State Library of Congress Shelving Test (opens in new window)