1. 1552. Adulteration and misbranding of Interferin. U. S. v. Don C. Keefer Keefer Laboratories). Plea of nolo contendere. Sentence of 1 year In jail. Defendants: Don C. Keefer, trading as the Keefer Laboratories, Chicago, Ill. Issue Dates: August 1946
2. 1558. Misbranding of Interferin. Two indictments: U. S. v. Don Keefer. Pleas of not guilty. Tried to the court; verdict of guilty. Sentences of 1 year in jail on each indictment. Defendants: Don Keefer Issue Dates: August 1946