For those who study Reformation and Post-Reformation issues, here is the LOC Z39.50 setup:
In Bookends to to File>Import Filter Manager and click the plus symbol. Choose the internet tab and add these settings
Name: Calvin College
Access: Library of Congress Z39.50 Gateway
Server Address: alexandria.calvin.edu
Server Port: 2200
Database name: SirsiDynix
Record Syntax: MARC21
Record Display: MARC
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