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The Library Corporation

Welcome to ITSMARC by TLC, a leader in metadata since 1974


What is ITSMARC?

ITSMARC is TLC's online copy cataloging resource providing access to 81 million records. It delivers two types of MARC records: bibliographic and authority. Most people think of ITSMARC as a source of bibliographic metadata but there are also LC, Sears and MeSH authority records available.


ITSMARC Databases

ITSMARC draws its MARC records from 23 separate databases. Click on the links to the left to get a brief description. Select Contents from the description display for more details.

Database Counts as of 2/1/2023
1,879,843

17,677,513

4,035,317

1,692,234

2,024,680

2,828,001

1,583,524

1,069,416

361,724

1,990,013

5,796,482

5,848,475

6,191,896

825,467

1,291,521

641,590

13,000,905

11,856,992

186,248

645,666

151,621

9089

1,161,402

Total:
82,749,619

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