D. Minnesota July 1960 casesAmerican Automobile Insurance v. De VriesLupino v. United StatesLand O'Lakes Creameries, Inc. v. Commodity CreditNorthwest Airlines, Inc. v. Airline Pilots AssociationAlbers v. Wilson Co.Northwest Airlines, Inc. v. International Ass'n of Machinists, AFL-CIOIn re P.T.G. Grain ServiceLoegering v. County of Todd