Linking References from pre-AACR2 or Former AACR2 Headings (New Authority Records)

1. Linking references are special types of cross references. They are most often used to record the pre-AACR2 LC form of a heading. NACO participants are no longer required to make linking references from pre-AACR2 headings found in LC bibliographic records online, but they may make them if the cataloger judges them to be useful or if they are required for specified projects (please note: OCLC participants should not make linking references from pre-AACR2 headings, due to OCLC’s name correction program). Although no longer routinely made, retain a linking reference from a pre-AACR2 headings on an existing authority record, unless it is no longer accurate. The provisions below are being retained for use in those instances when the linking reference is judged useful and for historical purposes.

2. Do not give a linking reference from a pre-AACR2 heading if:

A. the reference would normalize to the same form as the heading or another reference on the same record or to the same form as a heading on another record. Instead, give the form in a 667 field: "Old catalog heading: _____" Cf. DCM Z1, Introduction, p. 4-6.

B. there is no one-to-one correspondence between the pre-AACR2 heading and the AACR2 heading, i.e., two or more pre-AACR2 headings will be treated as one heading under AACR2,or one pre-AACR2 heading will be split under AACR2. Instead, in a 667 field give the appropriate information. For the former, use "Includes the old catalog headings: _____; and, _____." For the latter, use "Previous to AACR2 covered by the heading: _____" See RI 26,.

3. When changing the heading on an authority record that has already been coded as AACR2 or AACR2 compatible and the former heading is retained as an appropriate see reference, code the reference as an earlier established form of heading by using the value "e" in $w, position 3 ($w nne). Initiate changes to the LC bibliographic records on which the old heading has been used by notifying Coop Cat that BFM is needed. Example 1

4. Optionally: Code a reference as the LC pre AACR2 heading whenever the reference tracing would serve to identify exactly the pre-AACR2 form of the heading found in LC bibliographic records. Example 2

5. Standardize obsolete pre-AACR2 heading forms when tracing linking references, even though the linking reference is coded "do not make" ($w nnaa). Example 3

See also:

Section I - New Authority Records