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Library of Congress Classification: Main Classes

 

            A         General Works

...

            Z          Bibliography, Library Science, Information Resources

 

Library of Congress Call Number Basics        

 LC call numbers are made up of 3 parts

...

3. Date (most often the date of publication)

 

LC Cutter Table

 

     After initial vowels
     for the second letter:
     use number:


b
2


d
3


l–m
4


n
5


p
6


r
7


s–t
8


u–y
9

 

     After initial letter S
     for the second letter:
     use number:


a
2


ch
3


e
4


h–i
5


m–p
6


t
7


u
8


w–z
9

 

     After initial letters Qu
     for the third letter:
     use number:


a
3


e
4


i
5


o
6


r
7


t
8


y
9

 

     For initial letters Qa–Qt
     use numbers:


2-29

 

     After other initial consonants
     for the second letter:
     use number:


a
3


e
4


i
5


o
6


r
7


u
8


y
9

 

     For expansion
     for the letter:
     use number:


a–d
3


e–h
4


i–l
5


m–o
6


p–s
7


t–v
8


w–z
9

...

Vowels

S

Q

Consonants

IBM                      .I26

Sadron                     .S23

Qadduri                   .Q28

Campbell                 .C36

Idaho                    .I33

Scanlon                    .S29

Qiao                         .Q27

Ceccaldi                  .C43

Ilardo                    .I43

Schreiber                  .S37

Quade                      .Q33

Chertok                   .C48

Import                   .I48

Shillingburg             .S53

Queiroz                    .Q45

Clark                       .C58

Inman                   .I56

Singer                       .S57

Quinn                       .Q56

Cobbleston              .C63

Ipswich                 .I67

Stinson                     .S75

Quorum                    .Q67

Cryer                       .C79

Ito                         .I87

Suryani                     .S87

Qutub                       .Q88

Cuellar                    .C84

Ivy                        .I94

Symposium              .S96

Qvortrup                  .Q97

Cymbal                   .C96

 

Call Numbers and Copy Cataloging

 

  1. Check the call number structure – The 1st cutter should be preceded by a period and a 2nd cutter (if present) should not – there are never more than 2 cutters

...

5. When in doubt, just ask a cataloger

 

Art Collection Call Numbers (N, TR, TT)

 

Under Library of Congress rules, exhibition catalogs that contain the work of an artist end with the exact same call numbers.  These numbers all have a second cutter of “.A4” – since USU has such a large collection of art catalogs (thanks to the Caine Foundation), this doesn’t work for us.  So the procedure at USU is to change all second “.A4” cutters to a cutter based on museum or gallery the exhibition was held in or if that is not applicable, to the author of the text. 

...