Quote Origin: You Are One of My Nicest Thoughts

Georgia O’Keeffe? Roxana Robinson? Apocryphal? Question for Quote Investigator: The influential American modernist painter Georgia O’Keeffe applied a lovely expression to a close friend. She called the person “one of my nicest thoughts”. Would you please help me to find a citation? Reply from Quote Investigator: Georgia O’Keeffe had a close relationship with her sister …