Welcome to ITS•MARC by TLC, a leader in metadata since 1974 |

What is ITS•MARC?
ITS•MARC is TLC's online copy cataloging resource providing access to 85 million records. It delivers two types of MARC records: bibliographic and authority. Most people think of ITS•MARC as a source of bibliographic metadata but there are also LC, Sears and MeSH authority records available.
ITS•MARC Databases
ITS•MARC 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 9/4/2025
1,948,090
17,996,616
4,035,317
1,692,234
2,531,124
6,215,223
1,642,705
1,099,015
361,724
2,022,268
5,796,482
6,271,077
6,552,808
852,362
1,298,799
661,133
10,774,282
12,472,681
224,151
645,666
151,621
9,089
1,215,969
Total:
86,470,436