Here is something that might be of interest.

Haim

From: SACO Cataloging Discussion List <[email protected]> On Behalf Of 
Berthoud, Heidy I
Sent: Monday, May 19, 2025 2:43 PM
To: [email protected]
Subject: [SACOLIST] SACO Shorts: Related terms (RTs) are reciprocal (common 
problem)


Earlier this month, we looked at the basics of related terms (RTs) and when to 
include them in proposals (see When to include related terms (RTs) in 
proposals, published on May 5). There is another important thing to keep in 
mind when proposing RTs: RTs are reciprocal. This means that headings related 
through RTs must have RTs to each other.



Examples



100 3   $a Jacobs family
500 3    $a Jacobus family
500 3    $a Jacoby family



100 3   $a Jacobus family
500 3   $a Jacobs family



100 3   $a Jacoby family
500 3   $a Jacobs family



150    $a Care of the sick
550    $a Home nursing



150    $a Home nursing
550    $a Care of the sick



150    $a Dwellings
550    $a Housing



150    $a Housing
550    $a Dwellings



Any time you propose a new or changed RT, you also need to propose an RT at the 
reciprocal heading as well. For example, the heading Natural gas distribution 
was established in November 2023 with the RT Natural gas pipelines. The 
proposer also had to submit a change proposal to Natural gas pipelines to add 
the RT Natural gas distribution.



Proposers frequently forget this step! If you forget to propose the reciprocal 
relationship-and if your RT is valid and follows the instructions in H 
370<https://urldefense.com/v3/__https://www.loc.gov/aba/publications/FreeSHM/H0370.pdf__;!!KGKeukY!ycz_pfP7nwBDf4aiUVSzEeCpuuH_t3HV2uyd1I_UIyB2YCaPE86aTnNIttJQD01Bc_V2DxkA33MHO1w74g$
 >-PTCP will try to make the proposal for you at point of review. Depending on 
the topic, we may need to reach out for additional information. As always, it 
helps PTCP work more efficiently when the necessary proposals are already in 
place.


SACO Shorts are quick tips that cover common proposal problems or frequently 
asked questions. SACO Shorts are published on the first and third Mondays of 
the month.
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