Happy birthday Georgia O’Keeffe (1887–1986). Behind her in this portrait, taken in 1918 by Alfred Stieglitz, whom she would marry in 1924, you can see one of her early drawings titled “No. 15. Special” which was pivotal in her artistic development. See why.

“Georgia O'Keeffe: A Portrait,” 1918 by Alfred Stieglitz, © The Georgia O’Keeffe Foundation / Artists Rights Society (ARS), New York 

Georgia O'Keeffe, American (1887-1986), Petunias, 1925, Oil on board, 18 x 30 in. Fine Arts Museums of San Francisco, Museum purchase, Gift of the M. H. de Young Family, 1990.55. © Georgia O'Keeffe Museum/Artists Rights Society (ARS), New York