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LC Authorities

Library of Congress authority records

The Library of Congress and NACO (Name Authority Cooperative Program) libraries create and maintain the authority records. Records are stored and displayed in the MARC authorities format. When working with WorldCat bibliographic records, you can search the Library of Congress authority records to determine the correct forms for names of persons, organizations, conferences, or titles associated with the resource you are describing, or when adding subject headings to the WorldCat bibliographic record, to determine established headings.

Types of headings

The OCLC authority file contains authority records for the following types of headings:

  • Personal names
  • Corporate names
  • Conference names
  • Geographic names
  • Uniform titles
  • Series titles
  • Genre headings
  • Subject headings (topical terms as well as names and titles with subject subdivisions)
  • Children's subject headings
  • Subdivision headings

Controllable fields

Only the following fields permit the control of these headings using a Library of Congress authority record:

  • 100, 110, 111, 130, 700, 710, 711, 730, 810, 811, 830 (where $b = “blank” or eng)
  • 600, 610, 611, 630, 650, 651, second indicator 0
  • 655 second indicator 7, $2 lcgft

Search or browse for an LC authority record

When working with WorldCat bibliographic records, you can search the Library of Congress authority records to determine the correct forms for names of persons, organizations, conferences, or titles associated with the resource you are describing, or when adding subject headings to the WorldCat bibliographic record, to determine established headings.

  1. From the Data Type drop-down list, select Authority Records.
  2. From the Scope drop-down list, select a scope.
    •  LC - searches the LC file
    • LC - Browse - browses the LC file
    • LC - Root/Expanded Browse - browses for a search term only or for both a search term and an expanded term
  3. From the Index drop-down list, select an index. For a list of all indexes, see Record Manager: Authorities Guide.
  4. In the Term(s) text field, enter your search terms. The text field will expand to fit your search terms, if needed.
    (Optional) If you selected LC - Root/Expanded Browse, enter an expanded term in the Expanded Term(s) text field. The expanded term will be searched with your search term.
    LC - Root/Expanded Browse search - Example
    LC - Root/Expanded Browse example
  5. Click Search. The Search results page appears with the matching authorities results listed in a table with this information:
    • Name - The name of the authority and its associated See (4xx) and See Also (5xx) references.
       Note: See and See Also references are displayed as links if they lead to an authority record. Click the link to open the authority record in the MARC editor.
    • Field - The field in which the authority appears.
    • Description - Lists information about personal, corporate/conference, or geographic names.
  6. Click the name of the matching item to view the authority file record.

Search or browse the LC authority history file

When working with LC authority records, you can view the current version and all changes made to an authority record using the LC authority history file.

  1. From the Data Type drop-down list, select Authority Records.
  2. From the Scope drop-down list, select a scope.
    • LC History File - searches the LC history file
    • LC History File - Browse - browses the LC history file
  3. From the Index drop-down list, select an index.
    • Control Number
    • Heading
    • LCCN
  4. In the Term(s) text field, enter your search terms. The text field will expand to fit your search terms, if needed.
  5. Click Search. The results list opens.
     Note: If you selected LC History File - Browse as your scope, click an index term to access the results list.
    LC History File - Browse results - Example
    LC history file browse results
    LC History File search results - Example
    LC history file search results
    (Optional) From the results list, you can sort using the Sort by drop-down list and filter using the Status Option drop-down list.
    Sort options
    • Most Recent at Top (default)
    • Oldest at Top
    • LCCN
    • Control Number
    • Main Entry
    Filters
    • None (default)
    • Corrected or Revised Record
    • New Record
    • Deleted Record
  6. Click View to view an authority record.
    (Optional) Click Print to print the authority record.
  7. Click View Current Version to open the authority record in the authority record editor.
  8. From the authority record editor, you can view superseded versions of the authority record by selecting Record > View Superseded Versions.
    Superseded versions of an authority record - Example
    Superseded versions of an authority record

Apply Library of Congress authority heading information to a MARC 21 field

After you control a heading and replace the record in WorldCat, Record Manager automatically updates the heading whenever the linked authority record changes.

  1. Open the record to which you wish to apply Library of Congress authority heading information.
  2. In the MARC 21 editor, click the field immediately above the location where you want to add the controlled field and then click the Add Field button (Add Field button).
  3. In the Basic search panel, select LC (to search the LC file) or LC - Browse (to browse the LC file).
  4. From the Index drop-down list, select an index.
  5. Based on the index you selected, enter your search terms. The text field will expand to fit your search terms, if needed.
  6. Click Search. The search results will be displayed in a table with the following columns:
    • Name - The name of the authority and its associated See (4xx) and See Also (5xx) references.
       Note: See and See Also references are displayed as links if they lead to an authority record. Click the link to open the authority record in the MARC editor.
    • Field - The field in which the authority appears.
    • Description - Lists information about the personal, corporate/conference, or geographic name.
  7. Click the Name of the matching authority to view the authority file record.
  8. Click Copy Link Data.
  9. Return to the field you created in the MARC 21 editor.
  10. Select Apply Authority Link from the Edit drop-down menu. The Library of Congress authority header information is added to the field. The header, which is from the bibliographic record, is inserted as a hyperlink and $0 is also present.

Auto-suggest LC Names

LC Authorities auto-suggest

When working in the MARC 21 editor, auto-suggestions for field-appropriate LC Names to start with the first keystroke in new and existing records whose

  • 040 field subfield $b is blank or identified as English ($b eng).
  • 100, 110, 111, 130, 700, 710, 711, 730, 800, 810, 811, and/or 830 field is blank.
  • Auto-suggested headings are automatically controlled when selected. If you are editing an existing field, you must first follow the procedure to remove a link from a controlled heading in a MARC 21 record.

Disable auto-suggest for LC Names

 Note: After disabling Library of Congress name auto-suggest, click Reset Form to re-enable.

  1. In the left navigation, click Preferences.
  2. From the Preferences panel, click Working with Records.
  3. Deselect Automatically suggest Library of Congress names.
  4. Click Save.

Add additional subfields to controlled names

When working in the MARC 21 editor, you can add relator codes and relator terms to controlled names in the following fields: 100, 110, 111, 700, 710, 711.

 Note: 

  • A list of codes and a list of terms are available for English cataloged records (040 $b eng).
  • A list of codes is available for non-English cataloged records (040 $b is not eng).
  1. From the MARC 21 editor, click the arrow to expand the guided entry field.
  2. From the Subfield drop-down list, select Relator Code ($4) or Relator Term ($e).
  3. From the Value drop-down list, enter a value. You can enter a value by:
    • Entering a value in the text field. When working in the MARC 21 editor, auto-suggestions for field-appropriate value start with the first keystroke in new and existing records.
    • Scrolling through the available values and clicking the value you want to add
      Guided entry field - Example
      Guided entry field
      (Optional) You can add up to six subfields to a controlled name field. Click the Add button (Add button) to add additional subfields.
  4. Click Done to add the subfield(s).
  5. Click Save > Save In-Progress Record.