Featured Image: Book Jacket and Book, Symbol Sourcebook: An Authoritative Guide to International Graphic Symbols, 1972; Written and designed by Henry Dreyfuss with foreword by R. Buckminster Fuller; Published by McGraw-Hill Book Company; Bound volume with color illustrations, Henry Dreyfuss Archive, Cooper Hewitt, Smithsonian Design Museum, Gift of Henry Dreyfuss, 1972-88-1-35, 1972-88-1-29