Complex sentence: Autry's Flying A Productions filmed seventy-nine half-hour episodes of the syndicated "The Range Rider" from 1951 to 1953 and 1959, a lost episode shown six years after the series ended.
Split into simpler sentences: Autry's Flying A Productions filmed 79 half-hour episodes of the syndicated "The Range Rider" from 1951 to 1953. In 1959 thee was a lost episode shown six years after the series ended.