ce prefix =

Canadian bilingual publication, English language cataloging.

cn prefix =

unilingual Canadian publication, English language cataloging (also used for unilingual French language cataloging, but records not in the LC Database).

sf prefix =

Records authenticated by LC for titles held by LC given less than full cataloging:  form card cataloging, minimal level cataloging, and other forms of cataloging for which no serial printed card exists (e.g., monographic series classified separately).

sn prefix =

Records authenticated by CONSER participants, the U.S. ISSN Center, United States Newspaper Program (USNP), and the former New Serial Titles Section (NST).  (Prior to 1984, "sn" control numbers were also assigned to LC minimal level cataloging records.)

lc

Descriptive and subject elements verified by LC; all name and series headings are represented by name/series authority records in the national authority file; not used after April 30, 2009.

lccopycat

Code lccopycat signifies that the Library of Congress has used another organization's record as the basis for its cataloging.  All headings have been checked against the relevant authority file (except for series headings in records used after May 31, 2006 and except subject headings not from Library of Congress Subject Headings).

lcd

Descriptive elements verified by LC or a CONSER participant; all name and series headings are represented by name/series authority records in the national authority file or there are no headings appropriate to the record; not used after April 30, 2009.

nlc

Descriptive elements and headings verified by Library and Archives Canada.

nsdp

ISSN elements (e.g., ISSN, key title) verified by the U.S. ISSN Center (previously known as the National Serial Data Program (NSP)).

isds/c

ISSN elements verified by ISSN Canada.

nst

Code used 1981-1984 for records selected for publication in New Serial Titles; descriptive elements are only as accurate as reported by the NST reporting libraries; codes "lcd" and "msc" used 1985-1993 for such records (LC's New Serial Titltes Section abolished in 1993).

msc

Descriptive elements verified by the U.S. ISSN Center, NST, the CONSER Minimal Level Cataloging Section, or a CONSER participant including U.S. Newspaper Program participants; all name and series headings are in AACR2 form but may not be represented by name/series authority records in the national authority file.  (Prior to fall 1989, this code was also used when there were no headings appropriate to the record.)

pcc

Descriptive elements verified by LC or a CONSER participant; all name and series headings are represented by name/series authority records in the national authority file or there are no headings appropriate to the record; used as of May 1, 2009.

premarc

Code used for records converted to machine-readable form as part of LC retrospective conversion (source records used are printed catalog cards taken from the LC general shelflist and other manual LC files, or OCLC records than have been amalgamated with data from LC manual files); descriptive elements have not necessarily been verified or reverified by LC but the authoritativeness of the headings is indicated by the additional presence of code "lcd," "pcc," or "msc."

xlc

Not currently treated as a serial by LC; this code will appear only in combination with other codes (e.g., "nsdp," "nlc") that indicate serial treatment by another authenticating agency.

LAW

Assigned because an appropriate class "K" number was not available at the time of cataloging.

IN PROCESS

LC call number not yet assigned.  (Prior to 1990, PAR or REV PAR was used.)

CLASSED SEPARATELY

Monographic series classified separately in LC.  (Prior to 1990, UNC used.)

UNCLASSED

Titles in LC which do not receive a call number, i.e. already existing form card cataloging (e.g., for technical reports) or temporary cataloging.  (Prior to 1990, UNC was used.)

UNCLASSIFIED

Same as "UNCLASSED."

NOT IN LC

Cooperatively cataloged records for serials known not to be in LC.

ISSN RECORD

Record created by the U.S. ISSN Center; may reflect a serial in prepublication or post-publication.

WMLC [no.]

Shelf number for non-microform materials represented by minimal level cataloging records.

ELECTRONIC RESOURCE

Serial remote access electronic resource for which another number has not been assigned.

Microfilm [no.]

Microfilm shelf number

Microfiche [no.]

Microfiche shelf number

Newspaper

Considered a newspaper within LC; may be followed by a number.

Comic Book [no.]

Comic book shelf number

DISCARD

Retention decision

CURRENT ISSUES ONLY

Retention decision

0 =

Continues

1 =

Continues in part

2 =

Supersedes

(not used for AACR2)

3 =

Supersedes in part

(not used for AACR2)

4 =

Formed by the union of ... and ...

5 =

Absorbed

6 =

Absorbed in part

7 =

Separated from

0 =

Continued by

1 =

Continued in part by

2 =

Superseded by

(not used for AACR2)

3 =

Superseded in part by

(not used for AACR2)

4 =

Absorbed by

5 =

Absorbed in part by

6 =

Split into ... and ...

7 =

Merged with ... to form ...

8 =

Changed back to