D. Colorado August 1969 casesBaker v. People of State of ColoradoDeHaas v. Empire Petroleum Co.Old Homestead Bread Co. v. Continental Baking Co.Denver Petroleum Corporation v. Shell Oil CompanyKeyes v. School Dist. Number One, Denver, ColoradoIn re LehnerRich v. HersheyUtah Farm Production Credit Association v. DinnerKeyes v. School Dist. Number One, Denver, ColoradoMartinez v. United States