Hi @seminolelady I just called Mayo myself to get the straight answer on how to get the official CDC card with the record of your proof of vaccine.

Here is what you need to do:
Call the office of Patient Experience
1-844-544-0036
Request the form for the CDC proof of vaccination and an official card will be sent out within the week.

Or online:
You can get your COVID vaccine card and print it out from the Mayo Clinic patient portal (Patient Online Services) or the Mayo Clinic app.
Please see the instructions online here: https://mcforms.mayo.edu/mc7800-mc7899/mc7881-61.pdf

I'll also include the instructions here:

PATIENT ONLINE SERVICES ON THE WEB
1 Log in to Patient Online Services.
2 Select “COVID-19” from the menu on the left side of the home page.
3 Select “COVID-19 Test Results & Vaccine Records” from the COVID-19 page.
4 Select the arrowhead to expand the box with your vaccination records.
5 Select the print icon to the right of the words “COVID-19.”
6 Select the print button in the print window to print your records.

PATIENT ONLINE SERVICES ON THE MAYO CLINIC APP
1 Log in to the Mayo Clinic app.
2 Scroll to the COVID-19 section on the home page.
3 Tap “COVID-19 Results & Vaccinations.”
4 Tap arrowheads to view records.
5 Take a screen shot of the page and follow your usual steps for printing screen shots. To enable screen shots from the Mayo Clinic app on an Android device, tap the three dots on the COVID-19 page to go to “App Preferences” and select “Enable Screen Shots.”