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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 77 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 5/13/2021
1,848,920

17,444,948

4,035,317

1,692,234

2,023,581

1,199,360

1,556,186

1,063,187

361,724

1,977,957

5,796,482

5,689,512

6,075,496

816,715

1,290,306

641,590

13,722,966

11,639,755

196,576

645,666

151,621

9089

1,145,382

Total:
81,024,570