Potted flowers grown by Christina Olson sit here on the window sill of her house in Cushing, Maine. Through the window beyond the geranuims, one can see the model best known as the pink-dressed figure in Christina's World (1947 tempera, Museum of Modern Art, New York). Ms. Olson, her brother Alvaro, and their farm were subjects of Wyeth's paintings and drawings for decades ending with the siblings' deaths in the late 1960s. The house is now open to visitors through the Farnworth Art Museum.