Prefix on card:

MARC prefix:

Explanation of usage:

A

a

Cataloging provided to LC by an American library, 1909-

AC

ac

Cataloging for foreign materials provided to LC by cooperating libraries under the auspices of the ALA Committee on Cooperative Cataloging, 1932-1942

AC

ac

Annotated cards for juvenile books, 1966-

AF

af

Cataloging for foreign acquisitions provided to LC by other American libraries, 1946-1950

AFLM

afl

[No explanation available]

Agr

agr

U.S. Department of Agriculture cataloging, 1902-

bi

Handbook of Latin American Studies record

BR

br

Library of Congress, Division for the Blind, braille book

BS

bs

U.S. Bureau of Standards cataloging, 1913-1938

C

c

U.S. Interstate Commerce Commission cataloging, 1915-1916

C

c

Library of Congress, Chinese entries, 1949-

C-245 or 245*

c

LC card numbers for June-August 1898.  Year prefix "98" added when input into MARC

CA

ca

LC temporary entries for books in the general classified collections, 1905-1937

CA Dupl

cad

LC temporary entries for books in the general classified collections, 1905-1937

CD

cd

LC analytical entries for sets and series prepared by the Card Division, 1916-1940

CD

cd

Cataloging prepared for LC card sales

clc

Collection level cataloging; PREMARC record

CS

cs

Cataloging prepared by the LC Cooperative Cataloging and Classification Service, 1934-1939

CX

cx

Cross reference cards used in LC catalogs for Chinese entries, 1958-

cy

Federal Cylinder Project, Oct. 1980

1-D-245 or D-245

d

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC

DO

do

U.S. Superintendent of Documents cataloging, 1913-1916

E

e

U.S. Office of Education cataloging, 1908-1958

ES

es

U.S. Engineers School cataloging, 1913-1935

F

f

U.S. Bureau of Fisheries cataloging, 1910-1940

1-F-245 or F-245

f

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC

Fi

fi

Films cataloged by LC, 1951-

FiA

fia

Cataloging provided by film producers, 1951-

FiE

fie

Cataloging provided by the Visual Education Service of the Office of Education, and other government agencies, 1951-

1-G-245 or G-245*

g

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC

GM

gm

Maps cataloged by LC, 1968-1972

GS

gs

U.S. Geological Survey cataloging, 1904-

H

h

U.S. National Institute of Health cataloging, 1914-1921

HA

ha

U.S. Housing Authority cataloging, 1940-

HE

he

Hebrew entries cataloged by LC, 1964-

HEW

hew

U.S. Dept. of Health, Education, and Welfare cataloging, 1958-

HEX

hex

Cross reference cards used for Hebrew entries, 1964-

1-I-245 or It-245*

it

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC

Int

int

U.S. Department of the Interior cataloging, 1959

J

j

LC cataloging for Japanese materials, 1949-

JA

ja

Cataloging for Japanese materials provided to LC by other American libraries, 1951

JX

jx

Cross reference cards used for Japanese entries, 1958-

K

k

Korean entries cataloged by LC, 1951-

KX

kx

Cross reference cards used for Korean entries, 1958-

L

l

U.S. Department of Labor cataloging, 1911-

llh

Index to Hispanic Legislation cataloging

ltf

Less-than-full cataloging; PREMARC record

M

m

Sheet music cataloged by LC, 1953-1962

MA

ma

Sheet music for which copy was supplied by another American library, 1953-1961

Map

map

Atlases in the Maps Division of LC, 1901-

1-Map-50 or Map-50

map

LC card numbers for maps for period May-December 1901.  Year prefix "01" added when input into MARC

Med

med

U.S. Armed Forces Medical Library cataloging, 1946-1948

Mic

mic

Microfilms cataloged by LC, 1949-

MicA

mid

Microfilms for which cataloging was provided by another American library, 1946-

Micp

mie

Microcards and microprints cataloged by LC, 1953-

MicpA

mif

Microcards and microprints for which cataloging was provided by another American library, 1953-

mm

Library of Congress Manuscripts Division

mp

Early films cataloged by LC, 1970s

MPA

mpa

Pan American Union cataloging for sheet music, 1956-

MS

ms

Manuscripts cataloged by LC, 1959-

1-Music-245 or
Music-245*

mus

LC card numbers for music for May-December 1901.  Year prefix "01" added when input into MARC

ncn

Nitrate Film Service cataloging

NE

ne

Materials published in the Near East or in the languages of those countries, 1961-

NEX

nex

Cross reference cards used for books published in the Near East or in the languages of those countries, 1961-

NO

no

U.S. Naval Observatory cataloging, 1930-1940

ntc

National Translation Center cataloging

nuc

Records printed in the National Union Catalog for which no LC card number is available

or

Order Division cataloging

PA

pa

Pan American Union cataloging, 1930-

Pho

pho

Cataloging provided by other libraries for photographic reproductions of books, 1927-

PhoM

php

Cataloging provided by Card Division for photographic facsimiles issued by the Modern Language Association of America, 1927-1938

PhomA

phq

Cataloging provided by other libraries for Modern Language Association of America photographic facsimiles

PO

po

U.S. Patent Office cataloging, 1917-1953

pp

Prints and Photographs videodisc system, March 1984

R

r

Phonograph records cataloged by LC, 1953-

RA

ra

Cataloging provided by other American libraries for phonographs, 1955-

1-Rc-245 or Rc-245*

rc

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC

re

Cataloging for commercial ethnic sound recordings produced in the U.S. project, 1981

ru

Cataloging from the Russian Book Chamber, 1988-

S

s

Smithsonian Institution cataloging, 1913-

SA

sa

Cataloging for materials published in Southeast Asia or in the languages of those countries, 1961-

SAX

sax

Cross reference cards used for materials published in Southeast Asia or in the languages of those countries, 1961-

sc

Serials, CONSER item not in LC

SD

sd

U.S. Department of State cataloging, 1914-

sf

Serials form card or Minimal Level Cataloging or classed separately monographic series

SG

sg

Surgeon General's Library, U.S. Army cataloging, 1916-

sn

Serials, CONSER, item may or may not be in LC

su

Split manuscripts records

SS

ss

Social Security Administration cataloging, 1944-1958

TB

tb

Talking Books program cataloging

tmp

Temporary cataloging from PREMARC

um

Union map; an outside map record input by the Geography and Map Division for NUC use but residing in the G&M database

unk

Card for which no LC card number was available; PREMARC

W

w

District of Columbia Public Library cataloging, 1905-1942

War

war

U.S. Army, War College cataloging, 1907-1932

X

x

Cross reference cards used in LC catalogs, January 1941-

1-Z-245 or Z-245*

z

LC card numbers for May-December 1901.  Year prefix "01" added when input into MARC