D. Puerto Rico February 1971 casesAyala v. Secretary of Health, Ed. and WelfarePowell v. Int'l Foodservice Sys., Inc.Hilton Intern. Co. v. Asociacion De Empleados De Casino De Puerto RicoRodriguez v. Maryland Casualty CompanyUnited States v. Puerto Rico Independence PartyRamos v. National Biscuit Co.Tommills Brokerage Co. v. ThonNarvaez v. British American Insurance Company