Pollack, Barbara. The Collectors: Dr. Claribel and Miss Etta Cone. Indianapolis, IN: Bobbs-Merrill, 1962."...Dr. Claribel died in 1929, Miss Etta in 1949. In the years from 1905 until their deaths, the sisters traveled numberless times to Europe. Without the borrowed judgement of a critic like Bernard Bernenson they amassed one of the great collections of modern art in America. Their collection of the work of Henri Matisse, their special friend, is one of international importance. Only the privately-shown Barnes collection in Merion, Pennsylvania can rival their possession of forty-four oil paintings, some twenty bronzes, and numberless drawings. They also acquired important work by Cezanne, Modigliani, Rouault, Vuillard, Bonnard, Chagall, Braque, Degas, Mary Cassatt, Gauguin, Van Gogh. They also collected heavily in the decarative arts -- laces, fine fabrics, jewelry... The paintings are beautifully housed in their own wing at the Baltimore Museum. How they came there is the subject of this joint biography: the story of two extraordinary women possessed of a true genius. Theirs was the genius of appreciation. Far ahead of their time, out of context with their family milieu and their native city, they knew great art when they saw it. With the authority of genius they bought and kept buying and dreamed of the day when their indifferent fellow Baltimoreans might share in their pleasures of appreciation..."--Jacket