Being able to see the product before purchasing it allowed shoppers to choose food at peak freshness, avoiding waste of money and food, 1945 (Series I, Box 43, Folder 23, ‘Advertising tearsheets – 1945’, E.I. du Pont de Nemours & Company Advertising Department records (Accession 1803), Manuscripts and Archives Department, Hagley Museum and Library, Wilmington, DE 19807).