NACO participants may use the 663 field in conjunction with the see also reference structure (5XX) for bibliographic pseudonyms.

The 663 field contains the explanatory text and the headings referred to that are required when relationships exist between an established name and other established names that cannot be adequately conveyed by one or more simple cross references generated from the 5XX fields.  (See also LCRI 22.2B and LCRI 26.2D.)  These are often used in the case of authors using two or more pseudonyms or joint pseudonyms.  5XX references should contain the $w with the 4th position set to c (reference not displayed, field 663 used).  Subfield $b is used to list the related established headings to which the heading in field 1XX of the record refers.

663 Examples:

100 1# $a Rich, Barbara

500 1# $w nnnc $a Jackson, Laura (Riding), $d 1901-

500 1# $w nnnc $a Graves, Robert, $d 1895-

663 ## $a Joint pseudonym of Laura (Riding) Jackson and Robert Graves.  For works of these authors written under their own names, as well as a listing of other names used by Laura (Riding) Jackson, search also under: $b Graves, Robert, 1895- $b Jackson, Laura (Riding), 1901-

100 1# $a Graves, Robert, $d 1895-

500 1# $w nnnc $a Rich, Barbara

663 ## $a For works of this author written in collaboration with Laura (Riding) Jackson, search also under: $b Rich, Barbara

100 1# $a Jackson, Laura (Riding), $d 1901-

500 1# $w nnnc $a Rich, Barbara

500 1# $w nnnc $a Riding, Laura, $d 1901-

500 1# $w nnnc $a Vara, Madeleine, $d 1901-

500 1# $w nnnc $a Outcome, Lilith, $d 1901-

500 1# $w nnnc $a Reiter, Lilian, $d 1901-

500 0# $w nnnc $a L. R., $d 1901-

663 ## $a For works of this author written under other names, search also under: $b Riding, Laura, 1901- $b Vara, Madeleine, 1901- $b Outcome, Lilith, 1901- $b Reiter, Lilian, 1901- $b L. R., 1901- $a For works written in collaboration with Robert  Graves, search also under: $b Rich, Barbara

The 664 field contains the explanatory text and the headings referred to that are required when relationships exist between a name not established and one or more established names that cannot be adequately conveyed by simple cross references generated from 4XX fields in the established heading records.

664 fields are rarely used.  Prefer simple cross references (663s) over complex cross references (664s).  Consult LC’s Cooperative Cataloging Team before using field 664 in Name/Series authority records (see MARC 21 Authority Format: LC Guidelines, 664 Complex See Reference—Name).

See also:

Section I:  New Authority Records