Answered By: Joe Hilton Last Updated: Feb 10, 2017 Views: 234
This is a Library of Congress classification number and it is used to locate most of the Library holdings. Think of it as the address of the book, showing you where in the Library you can find it. When you find an item you want in the Library catalogue you will need to note the class number in order to find the item.
Some parts of the Library's stock, for example Engineering books in the Harold Cohen Library, use a different classification system, i.e. Universal Decimal Classification system (UDC). These numbers start with a number, whereas Library of Congress numbers start with a letter. (NOTE: The UDC system is soon to be phased out and all items will be integrated into the Library of Congress sequence.)