My great grandmother's brother was John M. Anderson who owned a drugstore in Edgerton, Wyoming in the 1930 census. I cannot find him after 1930 and assume he died. He was born in Nebraska in 1878 and never married. His brother Robert owned a store in Colorado at that same time, but John is not with him in the 1940 census. And help is appreciated in finding a date of death, assuming it is in Natrona County.