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How LC Call Numbers are Arranged on the Shelves

The average call number has four lines on a book label, and each of those lines are read differently.

 

 

 

 

Z
The first line is made up of 1-3 letters, and is read in alphabetical order.
A
B
BC
BF
CJ
D
G
GE
GR
H

693 The second line is made up of whole numbers, and is read numerically. The numbers in this line may sometimes have decimals.
1
5
25
78
126
333
790
790.5
1357
4274

.A52 This line is called the cutter number, which usually represents the author's last name, but can also stand for the name of a corporation or the book's title. It is read first alphabetically by letter, and then the numbers are read as a decimal.
.D12
.D3
.G45
.G5
.G56
.G564
.G5643
.G6
.G67
.H2

1977
The last line is the year of publication, and is read in chronological order.
1654
1776
1796
1854
1910
1959
1959b
1978
1999
2001

Some labels, though, may have more than four lines.

AZ 513 .M7 I5 1984
This call number has two cutter numbers. The first cutter number narrows the topic; in this case .M7 stands for Mississippi. The second cutter number on this label, I5, represents the book's title. Both are read like the examples of cutter numbers above.

AE5 .E333 2004 v.1 Ending the call number may be letters or numbers designating the book's order in a series or set. They are read either numerically (v.1, v.2, v.3, ...) or alphabetically (ser.A, ser.B, ...).  Some common examples are:
  
v.1 Volume 1
v.193(1998) Volume 193, year 1998
v.37, no.2 Volume 37, Number 2
no. 305 Number 305
ser.B Series B
Suppl 
Supplement


The call number may also end with a copy number (c.2, c.3, ...).  This is used to tell multiple copies of the same book apart.

LC Call Numbers Outline | How to Read LC Call Numbers | Understanding LC Call Numbers | Physical Locations in the Library | Comparing LC with Dewey

Content last updated June, 2004 TH