Using call numbers
A call number is a unique code given to each item in the library. It identifies the subject and location of each book, journal, video, map, etc. McPherson Library arranges most items using the Library of Congress (LC) Classification system, which uses call numbers that start with letters and also include numbers. You can use LC Classification to see what call numbers are used for your topic.
The Curriculum Library uses the Dewey Decimal System to classify items. Dewey call numbers start with numbers and often include letters.
Examples:
McPherson book, using LC: PR6057 R37 I45
Curriculum book, using Dewey: 823 R6784H33125
Find the book you want in the Catalogue (Books & More) and get its call number (see eTutorials for search tips). Also check its location: McPherson, Reference, Music and Media, Priestly Law, etc. You can see this information in the main result list (shown below) or the catalogue record, which you see when you click the item's title.
Call number locations
Most books have a "McPherson Library" location:
A-GN699 3M
GN700-PR 3
ML-MT 2
PS-V 2
M (Scores) Main
Maps Main
Reference Main
Z Lower
For other locations and to see more precise call number breakdowns, see the floor maps. Maps are also posted around the library, or you can ask at the Library Help Desk.
Go to the indicated location then look for the call number. It will be one line in the catalog but broken into at least two parts on the book, found on the book's spine. Hunt it down one part at a time. Here is an example for the book Eau Canada: The Future of Canada's Water.
Some books also have a publication year at the end of their call numbers. These are arranged chronlogically (2005 before 2008, etc.). Journals and books in series may also have volume numbers. These are arranged sequentially (v.1, v.2, v.3...).
![]() |
When you find a book, look at the ones shelved around it - because they're arranged by subject, they should be similar. You can do this virtually in the catalogue by clicking on the call number in the item record. If you have trouble finding something, ask a librarian! |
For more information contact:
Teaching and Learning Office






