Thank you for joining us here in the Community, @NewVistaCorp.

Let me share with you the steps on how to customize Customers Contact List and Vendors Contact List reports to show the details that you want. 

Here's how:

1. Go to Reports.
2. Click on List.
3. Choose Customer Contact List.
4. Click on Run.
5. Go to Customize Report.
6. Make sure to put a checkmark beside the First Name, Last Name, Phone, and Email or any other details that you want to appear on the report.
7. Click OK.

Follow the same steps under Vendors Contact List.

You may also check on how to customize customer, job, and sales reports in QuickBooks Desktop for more tips in customizing reports.

I'll be here if you have other questions about customizing the Customer Contact List and Vendor Contact List. Let me know in the comment section. Take care.