Signed book: O’Keeffe. NY: 1970. Softcover, 8.75 x 11, 196 pages. Published on the occasion of an O’Keeffe retrospective exhibition organized by the Whitney Museum of American Art, signed on the half-title page in blue ballpoint by O’Keeffe. In fine condition, with some mild toning and soiling to covers and a hint of light sunning to the spine. A handsomely illustrated study. Pre-certified PSA/DNA and RRAuction COA.