NEW YORK (AP) — The painting was buried behind coats and boxes in the closet of a Manhattan apartment for decades. Few if anyone knew about the hidden treasure until the woman in her 90s who lived there nonchalantly told her niece one day, “oh by the way, there’s a Georgia O’Keeffe in the closet. ”The painting — an early example from a time when O’Keeffe became enamored with the American Southwest — depicts a classic New Mexico landscape with rolling hills in earth tones. its a...