[Classweb-users] RS and RT schedules

Paul G Weiss pwei at loc.gov
Wed Dec 2 16:29:02 EST 2009

The LC bib records with call numbers higher than RS441 and RT120 are erroneous.  There are no currently valid numbers in RS higher than 441 or in RT higher than 120.

Paul Weiss
Library of Congress
Acquisitions and Bibliographic Access Directorate
Policy and Standards Division

>>> <Michael.Borries at mail.cuny.edu> 12/2/2009 3:19 PM >>>
The RS schedule in ClassWeb ends with RS 441, and the RT schedule ends 
with RT120.  A call number search in LC's online catalog shows that there 
are numbers higher than RS441, one assigned as recently as 2005, although 
most numbers are assigned to older materials.  In RT, most of the 
materials assigned a number over RT120 are older, although one dates from 
1976, another from 1991. 

One library assigned the call number RS735.I5 C8 2006 to a book I am 
cataloging, but the class number does not exist in ClassWeb nor in LC's 
online catalog.  I'm not sure how to interpret what I am seeing. 

Michael S. Borries
CUNY Central Cataloging
151 East 25th Street, 5th Floor
New York, NY  10010
email: Michael.Borries at mail.cuny.edu 
Phone: (646) 312-1687
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