They tell you a bit about the book and where it can be found in the library. Each row of bookshelves has a sign with which call numbers are in that row.
Most of our books use Library of Congress Classification call numbers. The letters and numbers are assigned based on the book's subject, so you can find other books about similar topics on the shelf nearby.
Call numbers in order on the shelf
Books are arranged in alphabetical order. A single letter comes before double letters.
The numbers are in order, from low to high. Read the first set of numbers as whole numbers, followed by decimals.
The 2nd set of letters comes after the decimal point. They are arranged in alphabetical order.
Immediately after the letter, there's another number. Read them as decimals.
If there are any more letters and numbers, read these the same way you did for the 2nd set.
The year it was published is last.
|B||Philosophy, Psychology, Religion|
|C||Archaeology, Genealogy, Biography|
|D||History & Ancient History|
|E-F||History of America|
|G||Anthropology, Geography, Folklore|
|H||Social Sciences, Statistics, Business|
|P||Languages & Literature|
|Z||Bibliography & Library Science|