This collection covers the period that Ratia was with Marimekko, 1951-1979.It includes scrapbook, press releases, correspondence, brochures, photographs, magazine articles, swatches, and trade catalogs. It contains extensive information about the company's affiliation with D/R and its operations in Finland. It includes a copy of "Phenomenon Marimekko," the catalog from a comprehensive exhibition that was held at the Museum of Applied Arts in Helsinki in 1986. The collection contains legal correspondence and contracts pertaining to D/R's representation of Marimekko in the United States, as well as numerous swatches, sample books, brochures for stockholders, and trade catalogs. Files pertaining to Marimekko's work in Finland is mostly in Finnish and consists of brochures, posters, articles, and sample books, as well as a copy of the publication, "Design in Finland 1983."Additional information on Marimekko's association with D/R can be found in the Cooper-Hewitt Design Archive's Design Research, Inc. Collection.