One of the most touching such exchanges was between two of the greatest artists and most remarkable women the world has ever known — Frida Kahlo and Georgia O’Keeffe. Both were prolific letter writers — Kahlo in her passionate illustrated love letters to Diego Rivera, and O’Keeffe in her equally passionate love letters to Alfred Stieglitz, her lifelong correspondence with her best friend, and her emboldening missives to Sherwood Anderson. But what Kahlo wrote to O’Keeffe in 1933 was a wholly different kind of epistolary and human magic. Even though the Mexican painter had herself been dealt an unfair hand — including a miscarriage just a few months earlier, her mother’s recent death, and more than thirty operations over the course of her life after a serious traffic accident during adolescence sent an iron rod through her stomach and uterus — Kahlo didn’t hesitate to reach out with a beam of compassion during O’Keeffe’s moment of crisis. Shortly after the American painter was hospitalized for a nervous breakdown and instructed by doctors not to paint for a year, Kahlo sent her an epitome of what Virginia Woolf so aptly called “the humane art.” [https://www.brainpickings.org/2015/02/27/frida-kahlo-georgia-okeeffe-letter/]