Obsolete Procedure: X-class Materials and Materials Needing Special Protection -- Harvard College Library Technical Services

Widener Library Cataloging Documentation

Classification CL/1996/1

X-class Materials and Materials Needing Special Protection

BACKGROUND: The use of the X-class (or "X-cage") to protect and ensure the non-circulation of material that is fragile or particularly vulnerable to theft or mutilation has been largely superseded by the use of the Harvard Depository. Discontinued categories include XF (format problems), XL (semi-rare), XM (miniature books), XP (poor paper), XR (erotica), XS (serials with format problems), XT (boxed material kept together by source), XVG (Photostats) and XZ (portfolio-sized items). These types of material should now be sent to HD. (Consult the book selector if some other disposition seems preferable.) The X sub-classes still in active use (mostly for non-book materials) are listed below.

PROCEDURES: For material going to HD which the book-selector has designated as non-circulating, add a note to the LOC in subfield n indicating the reason for the restriction. Use one of the following terms:

--fragile

--miniature

--format problem

--poor paper

--valuable

--vulnerable

e.g. LOC---------------------|n Non-circulating (poor paper)

For material being classed in the active X categories, use the next available number on the check sheets kept in the black folder in Room 191 (Rear).

X-classes still in active use:

XA Works in parts (Temporary class for unbound fascicles waiting for binding)

XVA Miscellany (rolls, games, etc.)

XVB Photographs, post cards

XVC Card bibliographies

XVH Map cases issued with works in parts

XVN Newspaper clippings, scrapbooks

XVP Phonograph records, compact discs

XVPS Phonograph records - Serials

XVQ Phonotapes, cassettes

XVQS Phonotapes, cassettes - Serials

XVR Videorecordings

XVRS Videorecordings - Serials

XVS Slides, microforms (if not for Microtext Rm)

XVSS Slides, microforms - Serials (if not for Microtext Rm)

XVT Computer files (including diskettes, floppy disks and CD-ROMs, etc.)

XVTS Computer files - Serials

Discontinued X-classes:

XF, XFA Format problems

XLA-XLZ Semi-rare

XM, XMA Miniature books

XP-XPS Poor paper

XR Erotica

XS Serials with format problems

XT Boxed material kept together by source

XVG Photostats

XZ Portfolio-sized items (over 40 cm.)

Issued by the Executive Committee of the Cataloging Council.

Prepared by: P. Lisbon

CL/1996/1

May 31, 1996

Supersedes: All previous memos on this topic


Obsolete Procedure Provided Only as a Reference to Past Practice

X-classes still in active use:
XA	Works in parts (Temporary class for unbound fascicles waiting for binding)
XVA	Miscellany (rolls, games, etc.)
XVB	Photographs, post cards
XVC	Card bibliographies
XVH	Map cases issued with works in parts
XVN	Newspaper clippings, scrapbooks
XVP	Phonograph records, compact discs
XVPS	Phonograph records - Serials
XVQ	Phonotapes, cassettes
XVQS	Phonotapes, cassettes - Serials
XVR	Videorecordings
XVRS	Videorecordings - Serials
XVS	Slides, microforms (if not for Microtext Rm)
XVSS	Slides, microforms - Serials (if not for Microtext Rm)
XVT	Computer files (including diskettes, floppy disks and CD-ROMs, etc.)
XVTS	Computer files - Serials
Discontinued X-classes:
XF, XFA	Format problems
XLA-XLZ	Semi-rare
XM, XMA	Miniature books
XP-XPS	Poor paper
XR	Erotica
XS	Serials with format problems
XT	Boxed material kept together by source
XVG	Photostats
XZ	Portfolio-sized items (over 40 cm.)