Modifying the LC/NACO file, phase 2

Gary L. StrawnNorthwestern University Library

mrsmith@northwestern.edu

What’s going on?

• Changes needed in LC/NACO Authority File for RDA

• 2 (later 3) phases• Each record only issued once (…)• Definitions adjusted as time passed• Documentation:

http://files.library.northwestern.edu/public/pccahitg

Phase 1

• Identify records that cannot be used under RDA

• Only records that do not also require some change during phase 2

• Changes made ~August 2012• ~400,000 records changed

Phase 1.5

• Deal with the RDA 7XX fields• Changes made January, 2013• Most RDA 7XX fields removed• Many became 4XX• Not yet removed if record requires a

change during phase 2• ~15,000 records changed

Phase 2

• Change texts of fields• Re-code changed AACR2 records as RDA• ~400,000 records to be changed• Expected to begin March 4• 30,000 records per day• Sequential order per LC's copy of the file

Phase 2: examples of changes

• Spell out Dept.• Manipulate dates in X00 $d• Spell out or remove O.T. and N.T.• Koran becomes Qur'an• $t Selections becomes $t Works. $k

Selections

Phase 2: examples of changes

• Replace violoncello with cello• Spell out arr., acc. and unacc.• Move $k Selections• Parentheses around acceptable $c

When record otherwise changed

• 046 field• 370, 373, 377, 378 fields• 382-384 fields• 510 for hierarchical superior

Change $d, add 046

Change $d, add 046

Change $d, add 046

Spell out 'Dept.'

Spell out 'Dept.'

Dept. in qualifier

510 for Hierarchical superior

Qur'an; add 377

Violoncello; add 382-384

O.T./N.T., with revised 430s

O.T./N.T.; add 377

Fancy 377

Move $k 'Selections'

Parentheses around $c

A hidden benefit …

OK for LC/NACO. What else?

• Changes needed to local authority records

• Many changed 1XX coming in Phase 2• Changes needed to bibliographic

records• RDA headings flipped back to AACR2• Changes to headings in bib records not

covered by authority records

Even more things for bib records

• Remove 245 $h• Generate 336-338• Replace Latin abbreviations• Spell out abbreviations• Deal with “&” in subfield $l• Etc., etc.

LCSH

• … $y Colonial period, ca. 1600-1775• $a Antioquia (Colombia : Dept.) $x History• $a Alexander, $c the Great, $d 356-323

B.C. $y Art• $a Bassoon and violoncello with orchestra• $a Bible. $p O.T. $p Isaiah $v Illustrations

That’s all for now!