Houston McCorkle, a 70-year-old retired railroad conductor, was found dead at his home in Louisville on June 30, 2013. McCorkle had spent nearly 30 years with the Norfolk South Railroad and in retirement enjoyed working with computers. Authorities classified his death as a homicide at his residence at 114 S 33rd Street.

At age 70 he was the oldest homicide victim in Louisville that year. His survivors include a son, a daughter, and multiple grandchildren and great-grandchildren. The Louisville Metro Police Department lists his killing among the city’s open 2013 homicides, and no arrests or publicly identified suspects have been announced.

What information about Houston McCorkle’s movements or visitors in the days before June 30, 2013 might help investigators or those who remember him?