What does "39 shirts" mean? Doesn't mean anything more to me than "shirts", heh.
"Jimmy 39"
https://www.redbubble.com/i/t-shirt/jimmy-carter-by-redboy/2...
"Carter 39"
https://www.amazon.com/Jimmy-Carter-39-President-America/dp/...
"I'm Nuts About Jimmy. Vote Carter in the '76"
https://www.wish.com/product/5a784d351a8c211973880ae4?hide_l...