Library of Congress

Program for Cooperative Cataloging

The Library of Congress > Cataloging, Acquisitions > PCC > SACO - Subject Authority Cooperative Program

The Subject Authority Cooperative Program (SACO) enables member institutions to submit proposals for additions to Library of Congress Subject Headings (LCSH), LC Genre/Form Terms (LCGFT), LC Demographic Group Terms (LCDGT), LC Medium of Performance Thesaurus for Music (LCMPT), and LC Classification (LCC) schedules.

Read more about SACO



Classification Lists (LCC)

Editorial Meeting Summaries

  • Summaries of decisions made at LC Policy and Standards Division subject/classification editorial meetings are available from 2005 to the present. Find an editorial meeting summary.

Special Projects Lists

SACO Training

SACO training is an essential component of the program. Members may participate in formal classroom workshops, view online webinars and video sessions at their own pace, or download materials for self-instruction.

Learn about SACO workshops

SACO Resources & Forms

SACO members use these resources to create and submit subject and classification proposals.

See all SACO resources & forms



SACO partners are key players in the global development of subject access to information resources.

Meetings & Events

Contact SACO