September 9, 1955 Sergeant Preston of the Yukon's first episode was aired on September 09, 2018 Challenge of the Yukon King Sgt. Preston +
February 4, 1939: Sgt. Preston premiered on Detroit's WXYZ. on February 04, 2018 Challenge of the Yukon Sergeant Preston and his ever-dependable pal in the series 'Sergeant Preston of the Yukon' Sgt. Preston +
February 4, 1939 Challenge of the Yukon (aka Sgt. Preston of the Yukon) made its radio debut on February 04, 2017 Challenge of the Yukon Sgt. Preston +