Index E-Mail Search Apply Hagerty Library Stack Guide Books are shelved according to the Library of Congress classification system. This classification was designed to group library materials of similar subject categories together. The Library of Congress system is an alpha-numeric system. To read the call number, simply note the first letter or letters of the call number.
Numbers follow the initial letter or letters.
These numbers are read as whole numbers. The third line of a call number is called the Cutter number. It is a letter followed by a decimal number. Dates are often added at the end of the call number. These dates usually reflect the publication year and are shelved chronologically.