A/V Access contains MARC bibliographic records of audiovisual titles such as books on CD, DVD, or Blu-ray. The records are from the Library of Congress.

British Current contains MARC bibliographic records from The British Library.

British Backfile contains older MARC bibliographic records from The British Library.

Canadian MARC contains bibliographic records from Library and Archives Canada (Bibliotheque et Archives Canada) as well as records that have been extracted from LC MARC Foreign.

The Contributed Research and Academic database contains MARC bibliographic records contributed by TLC customers.

The Contributed Schools and Public contains MARC bibliographic records contributed by TLC customers.

Docufile contains MARC bibliographic records from the U.S. Government Publishing Office, which include publications of the United States federal and state governments, foreign governments, and the United Nations.

The EF Sears database contains MARC bibliographic records for schools and small public libraries that use Sears subject headings.

Filipiniana contains MARC bibliographic records from The National Library of Philippines.

French MARC contains bibliographic records where French is identified as the primary language. The records are from the Library of Congress, Library and Archives Canada, the National Library of Medicine. This database is updated quarterly.

LC MARC Backfile contains older bibliographic records that were received from the Library of Congress.

LC MARC English contains bibliographic records from the Library of Congress, which are saved into the Last 5 Days and LC Current databases.

LC MARC Foreign contains bibliographic records where the primary language is identified as being other than English. The records are from the Library of Congress.

MARC en Espanol (Spanish) contains bibliographic records that identify Spanish as the primary language. The records are from the Library of Congress, Library and Archives Canada, the National Library of Medicine, U.S. Government Publishing Office, and contributing TLC customers.

The MedMARC database contains bibliographic records from the National Library of Medicine.

The MeSH (Medical Subject Headings) database contains subject authority records from the National Library of Medicine.

The MetaMARC database contains MARC records generated and enriched algorithmically from non-MARC metadata, providing access to a basic title record when there are no others available. MetaMARC records are more than a template but are minimal level encoding.

The Names & Subjects authority database contains authority records from the Library of Congress.

NewPubMARC contains bibliographic records with publication or record creation date within the previous two years. The records are from the Library of Congress, British MARC, and Canadian MARC.

NICEM A/V MARC contains bibliographic records for audiovisual titles from the National Information Center for Educational Media (NICEM).

The Quality MARC database contains bibliographic records from Quality Books, Inc., providing access to titles from 1,800 small and independent publishers.

The Sears database contains authority records for Sears subject headings. The records are from the H.W. Wilson Company.

The TheoMARC database contains bibliographic records from the Library of Congress and contributing TLC customers.