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 CompanyTommills Brokerage Co. v. ThonNarvaez v. British American Insurance CompanyUnited States v. Puerto Rico Independence PartyRamos v. National Biscuit Co.