The call number is the address of the book within the Library. After finding a specific book in EUREKA it is important to copy the entire letter-number combination in order to find the book, for the entire number identifies one book only. Be sure to note the floor number and wing location as well as any code reflecting collection areas on the floor such as Reference, Atlases, Curriculum, Juvenile, etc.

In the example below there are two copies of the book. Copy one is checked out but copy two is not and should be found on the second floor in the south wing.

The first section of the call number is a capital letter or combination of capital letters, e.g. AY, HF, PNZ, representing a broad subject area. The second section of the call number is a number representing a narrower aspect of the subject. The third section is a combination of letters and numbers which usually represent the author's last name. There may be a fourth section to the call number and additional section representing volume numbers or years.

To locate the book represented by the call number above, first find the circulating books on 2 SOUTH, then find the H section. Within the H's you'll find them arranged HA, HB HC, HD etc. Find the HF's. Within the HF section find the HF 486 books treating the number as a whole number. Continue to narrow the search for the book by looking at the third line and finding the E section within the HF 486 books.

Be careful with the number on the third line. The EUREKA screen displays a decimal point in front of the E , but not all of the spine labels show this important decimal. Regardless of whether it is shown or not, the number following the letter on the third line of the call number must be read as a decimal number. This means , for example, that .E536 comes before .E6 on the shelf. Any time a letter and number appear on the same line, the number is treated as a decimal number.