Death Valley Days was a popular TV-series of 18 seasons that ran from 1952 to 1970.
A series of stories, all based in fact, revolving around the legends of Death Valley, California where borax was mined. Mostly human interest stories about the life in Death Valley and the surrounding area in the late 1800's. - Source: tv.com
In Death Valley Days every episode has another combination of actors as well as different characters and storylines. Therefore, there are no actors that appear in more than 40% of all episodes.