You searched for: Issue Dates May 1950 Remove constraint Issue Dates: May 1950 Product Keywords popcorn Remove constraint Product Keywords: popcorn Collections Foods, 1940-1966 Remove constraint Collections: Foods, 1940-1966 Titles 15408. Adulteration of popcorn. U. S. v. 15 Bags. Remove constraint Titles: 15408. Adulteration of popcorn. U. S. v. 15 Bags.