The Library of Congress and Library and Archives Canada serve as the maintenance agency for the MARC 21 formats for bibliographic, authority, holdings, classification, and community information data for the MARC 21 user community. The Library of Congress maintains the MARC Forum, www.loc.gov/marc/marcginf.html an electronic discussion list for the formats.
Proposals for changes to the formats may originate from any MARC 21 user. Maintenance agency staff (Library of Congress and Library and Archives Canada) write, review, and edit proposals and discussion papers twice a year and distribute them electronically via the MARC Forum and the MARC website. http://www.loc.gov/marc/ . Following meetings held at the semiannual MARBI meetings in the United States and the Canadian Committee on MARC in Canada, the views expressed, along with those contributed via email and the listserv, are used by the maintenance agency to make final decisions on the proposals.
Current and past proposals and discussion papers can be found on the Library of Congress's MARC website. http://www.loc.gov/marc/development.html
All MARC 21 users are encouraged to voice any opinions and concerns about the MARC 21 formats via three different methods:
General revision proposals should be sent to one of the voting members of CCM, i.e., the representatives for the Canadian Library Association, ASTED, The Bureau of Canadian Archivists, AG-Canada or Library and Archives Canada. That CCM member will then consult further within his or her constituency and decide whether or not to sponsor and/or endorse the proposal for broader discussion within CCM.
The names and addresses of CCM members are available in a separate section of this Web site.