The NACM has a group dedicated to ministers interested in jail and prison visitation. Members (who are logged in) may access this group at the following URL:
https://nacministers.org/groups/prison-ministries/
Related posts:
Hospital Visitation for Ministers: A Few Considerations
How to Start a Christian Jail Visitation Ministry
An Evangelical Minister’s Guide to Hospital Visitation
Connect With Members by Role, Pastor, Chaplain, etc.
Christian Ministry Research Tools for Pastors and Ministers
20 Sites to Post Your Christian Podcast