Online cataloging resources

General

LC catalog

LC Linked Data Service (Authority records, MARC code lists, etc.)

Cataloger's Desktop (subscription only)

Catalogers reference shelf

Internet resources for librarians

OLAC

ODLIS: Online Dictionary for Library and Information Science

AUTOCAT archives

Illinois Public Library Statistics

Publisher's Catalogues directory

Marshall Breeding's worldwide library directory

Hennen's American Public Library Ratings (HAPLR)

Cooperative Cataloging Rules: Cataloging rules links

Cooperative Cataloging Rules: Record formats links

RDA toolkit

RDA training videos from ALCTS

RDA training documents and recorded webinars from LC

Stanford University's cataloging procedures

CCS

CCS web page

View your current system policies

CCS report viewer

OCLC

OCLC Bibliographic Formats & Standards

OCLC Authorities User Guide

Searching OCLC WorldCat

WorldCat duplicate record merge & record change requests form, for either catalog or authority records

OCLC Index of documentation

Connexion (browser version)

OCLC libraries search form

OCLC technical bulletins

OCLC-MARC format specifications

ISBNs

ISBN documentation

ISBN check digit calculator

Bookfinder.com ISBN directory to books

LCSH

LC authority file

Subject heading proposal form

Weekly lists of new Library of Congress Subject Headings

MARC

MARC formats and code lists

PCC Guidelines for the Application of Relationship Designators in Bibliographic records

Dewey Decimal Classification

WebDewey

025.431: The Dewey blog

New and changed entries for DDC23

Discussion papers and drafts

Archive of new and changed entries

Foreign language cataloging

ALA-LC romanization tables

Google Translate

Foreign Language Online Dictionaries and Free Translation links

National Library of Russia's online catalogues

IBFLIBNET (India's national union catalogue)

Japan's national Diet library catalog

Japan's National Institute of Informatics online union catalog

NUKAT (Poland's national union catalog)

KOLIS-NET (Korean union catalog)

McCune-Reischauer system for Korean transliteration

Korean McCune-Reischauer Romanization Dictionary (for both words and phrases)

Unicode Standard for character encoding

Character encoding in MARC21 records

AV cataloging

Music

Music Library Association Best Practices (for RDA, LCGFT, and LCMPT)

AllMusic Guide

Types of Composition for Use in Authorized Access Points: A Manual for Use with RDA

Yale music cataloging links

Back issues of the MOUG Newsletter (Nov. 1989 to previous year)

MOUG cataloging tools links

Describing Music Materials: A Manual for Descriptive Cataloging of Printed and Recorded Music, Music Videos, and Archival Music Collections for Use with AACR2 and APPM (Smiraglia)

Videos

OLAC Best Practices for cataloging DVD-Video and Blu-ray Discs

Stanford University's guidelines for cataloging videos using RDA

Internet Movie Database

Maps

Map scale calculator

Playaways

OLAC Guide to Cataloging Playaway Devices

OLAC Playaways and RDA (Partial update of the previous document)

Electronic resources

PCC Provider-neutral E-resource MARC record Guidelines for electronic monographs, serials, and integrating resources

Video games

OLAC Best Practices for Cataloging Video Games