Getting back to John’s first question. What utility is being served with the extra 510s Adam added to his last two examples? My adaptation of the fields in question decorated with fake designators:

110 2 University of Washington. ǂb Department of Endodontics
510 2 ǂw r ǂi Later merges with: ǂa University of Washington. ǂb Department of Periodontics
510 2 ǂw r ǂi Predecessor of split: ǂa University of Washington. ǂb Department of Periodontics and Endodontics
 
110 2 University of Washington. ǂb Department of Periodontics
510 2 ǂw r ǂi Later merges with: ǂa University of Washington. ǂb Department of Endodontics
510 2 ǂw r ǂi Predecessor of split: ǂa University of Washington. ǂb Department of Periodontics and Endodontics
 

— 
Mark K. Ehlert
University of St. Thomas



On Sep 15, 2020, at 4:00 PM, Hostage, John <[log in to unmask]> wrote:

Unlike with serials, we have never formally recorded relationships between two bodies that merged (nor two bodies that resulted from a split). Is there any reason to start now?
 
------------------------------------------
John Hostage
Senior Continuing Resources Cataloger
Harvard Library--Information and Technical Services
Langdell Hall 194
Harvard Law School Library
Cambridge, MA 02138
+(1)(617) 495-3974 (voice)
+(1)(617) 496-4409 (fax)
ISNI 0000 0000 4028 0917
 
From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Adam L Schiff
Sent: Tuesday, September 15, 2020 16:53
To: [log in to unmask]
Subject: Re: [PCCLIST] CB merges
 
Bob,
 
Here's a real life example that I have been working on: the University of Washington Department of Laboratory Medicine and the Department of Pathology merged on July 1, 2020 to form the Department of Laboratory Medicine and Pathology.
 
110 2 University of Washington. ǂb Department of Laboratory Medicine
510 2 ǂw r ǂi Mergee: ǂa University of Washington. ǂb Department of Pathology
510 2 ǂw r ǂi Product of merger: ǂa University of Washington. ǂb Department of Laboratory Medicine and Pathology
 
110 2 University of Washington. ǂb Department of Pathology
510 2 ǂw r ǂi Mergee: ǂa University of Washington. ǂb Department of Laboratory Medicine
510 2 ǂw r ǂi Product of merger: ǂa University of Washington. ǂb Department of Laboratory Medicine and Pathology
 
110 2 University of Washington. ǂb Department of Laboratory Medicine and Pathology
510 2 ǂw r ǂi Component of merger: ǂa University of Washington. ǂb Department of Laboratory Medicine
510 2 ǂw r ǂi Component of merger: ǂa University of Washington. ǂb Department of Pathology
 
Splits also present complications and, interestingly, there is no relationship designator to relate the two resulting bodies to each other.  There are only designators to relate the earlier name to each of the resulting names and the resulting name to the two earlier names:
 
The University of Washington Department of Periodontics and Endodontics split into the Department of Endodontics and the Department of Periodontics:
 
110 2 University of Washington. ǂb Department of Periodontics and Endodontics
510 2 ǂw r ǂi Product of split: ǂa University of Washington. ǂb Department of Endodontics
510 2 ǂw r ǂi Product of split: ǂa University of Washington. ǂb Department of Periodontics
 
110 2 University of Washington. ǂb Department of Endodontics
510 2 University of Washington. ǂb Department of Periodontics
510 2 ǂw r ǂi Predecessor of split: ǂa University of Washington. ǂb Department of Periodontics and Endodontics
 
110 2 University of Washington. ǂb Department of Periodontics
510 2 University of Washington. ǂb Department of Endodontics
510 2 ǂw r ǂi Predecessor of split: ǂa University of Washington. ǂb Department of Periodontics and Endodontics
 
--Adam
 
Adam Schiff
University of Washington Libraries