While in the library or using our online library catalog
you will notice most items have "call numbers" - letters and numbers indicating where they
can be located in the library.
at Middletown Thrall Library are filed according to the Dewey Decimal System
which divides all human knowledge into numbers from 000 to 999.
For example, Science can be found in shelves numbered 500 to 599, while Literature
can be found between 800 and 899.
Some Dewey numbers are short, such as 123 DEF, while others may be longer, such as 123.678 ABC
(beginning with REF
) indicate a book can used at the library but not borrowed.
at Thrall (except those in the Languages 400 section) begin with BCD
are filed alphabetically by the subject's name, and their call numbers start with the letter B
begin with J
(for "juvenile") and can be found in the
Developmental Disability Materials
begin with DDM
are also available in the Children's Department
is filed alphabetically by the author's last name
are filed according to "SuDoc numbers."
SUDOC stands for the Superintendent of Documents.
Those call numbers are filed alphabetically by the government agency which
published the documents: a document stored in the ED
section came from the
U.S. Education Department
and a document stored
came from the U.S. State Department
materials begin with LP
call numbers work according to ANSCR
Alpha-Numeric System for Classification of Recordings
. There are four parts (called "terms")
to an ANSCR number. The first term pertains to the type of music; for example, a CD
with opera music's first term will be B while a CD featuring a Broadway songs will likely
be filed under K, while represents musicals in ANSCR. The second term pertains to the
composer or performer. The third term is based on the album's title, and the fourth term
represents the performer's last name, if any. An example of an ANSCR call number is
an example which represents the audio CD Mahler: Symphony No. 9
, directed by Leonard Bernstein.
A chart outlining ANSCR call numbers can be found in the library by our music CD collection.
have call numbers beginning with the words "Express Fiction"
in the catalog. These new items are shelved in the New Books
from the Circulation Department.
There are three sections in this area: Fiction
, and Biography
Fiction is filed by author's last name, nonfiction by Dewey, and Biography
by the subject's last name.
almost always is filed by the Dewey Decimal System.
are filed in four sections:
- Regular movies and feature filmes are filed alphabetically by title.
- Nonfiction videos, such as documentaries or musical performances, are filed numerically according to the Dewey Decimal System.
- Children's videos have call numbers beginning with J can be found in the Children's Department.
items begin with "YA." Young Adult nonfiction is interfiled
with adult nonfiction. YA fiction
is shelved separately.
If you have any trouble locating an item or interpreting a call number please
speak with a librarian or ask us a question online