After his son graduated from Doland 's high school , Hubert Humphrey , Sr. left Doland and opened a new drugstore in the larger town of Huron , South Dakota ( population 11,000 ) , where he hoped to improve his fortunes .
After his son graduated from Doland 's high school , Hubert Humphrey , Sr. left Doland and opened a new drugstore in the larger town of Huron , South Dakota ; a population of 11,000 people , where he hoped to improve his fortunes .