040 Subfield $a - Original cataloging agency:
Subfield $a contains the MARC code or the name of the organization that created the original record.
Examples:
008/39 d [other sources]
040 ##$aMt$cMt
[Cataloging produced and input by the Montana State Library.]
008/39 # [national bibliographic agency]
040 ##$aDLC$cDLC
[Cataloging produced and input by the Library of Congress.]
008/39 d [other sources]
040 ##$aCaOTY$cCaOTY
[Cataloging produced and input by York University.]
008/39 # [national bibliographic agency]
040 ##$aDLC/ICU$cICU
[LC non-MARC record upgraded and input via online input/update to LC by the University of Chicago.]
008/39 c [cooperative cataloging program]
040 ##$aMH$cMH
[Harvard University Library cataloging input online as part of the Program for Cooperative Cataloging.]
To return, select: