Harry Walker managed the Astros from 1968-1972. Walker got his start as a player/manager with the Cardinals in 1955, before taking over their AAA team through 1964. He later managed the Pirates from 1965-1967 before going to the Astros. Walker's playing career spanned from 1940 to 1955 with the Cardinals, Phillies, Reds, and Cubs. He won the batting title in 1947 and was a 2x All-Star. Walker lost two of his prime years to military service during WWII.