Oldfags will enjoy. Confirmed an intriguing post from a couple breads back. Yep, Kennedy really did mention the correct usage of KEYSTONE in his final speech. First pic lifted from previous bread, second pic gets more specific.

(We are the keystone, btw, for those who missed it.)

I, for one, think this is

NOTABLE

https://www.americanrhetoric.com/speeches/jfkfortworthcocommerce.htm