"Threads of History: The Romance of Fibers in Decorative Textiles, 2500 B.C. - 2000 A.D," was a travelling exhibition circulated by the American Federation of Art. The show was held from May 20, 1966 to June 19, 1966. It was comprised of several hundered contemporary furnishing fabrics and close to one hundred examples of historic textiles. For its showing at the PMA, the Decorative Arts department selected almost one hundred textiles from the Museum's own collection to be added to the exhibit. The records are largely administrative in nature and contain material such as correspondence, installation supports, and planning documentation. The bulk of the records are from 1966.