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The Library Corporation

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


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What is ITSMARC?

ITSMARC is TLC's online copy cataloging resource providing access to 83 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 5/20/2024
1,918,894

17,911,795

4,035,317

1,692,234

2,532,185

5,426,029

1,631,096

1,084,762

361,724

2,010,305

5,796,482

6,090,599

6,386,732

842,337

1,296,243

658,101

10,768,987

12,179,739

210,010

645,666

151,621

9089

1,186,314

Total:
84,826,261

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