The Index of American Design by Erwin O. Christensen. New York: Macmillan, 1950. First edition. Published in association with the National Gallery of Art, this book surveys American furniture, decorative and folk arts, including sections on Pennsylvania Dutch motifs, Shaker design, depictions of saints, signs, weathervanes, quilts and many other subjects. Black white and some color photos. Hardcover with dust jacket. 229 pages.