Changes

* Gavin MacLeod was cast in the 1968 episode, "The Great Diamond Mines," as prospector Phil Arnold, who with his partner and cousin, Johnny Slack (John Fiedler), deceive San Francisco banker William Chapman Ralston (Tod Andrews) into buying their salted and worthless diamond mine at an undisclosed desert location. Allen Wood played Clarence King, the government geologist and later the first director of the United States Geological Survey.<ref>{{cite web|url=https://www.imdb.com/title/tt0556794/|title=The Great Diamond Mines on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=November 30, 2018}}</ref>

* Gavin MacLeod was cast in the 1968 episode, "The Great Diamond Mines," as prospector Phil Arnold, who with his partner and cousin, Johnny Slack (John Fiedler), deceive San Francisco banker William Chapman Ralston (Tod Andrews) into buying their salted and worthless diamond mine at an undisclosed desert location. Allen Wood played Clarence King, the government geologist and later the first director of the United States Geological Survey.<ref>{{cite web|url=https://www.imdb.com/title/tt0556794/|title=The Great Diamond Mines on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=November 30, 2018}}</ref>

* Murray MacLeod and Dennis Whitcomb were cast as two young men, Cliff and Frank, respectively, released from the [[United States Army]] still living on a temporarily deserted western fort in the 1969 episode, "A Full House." The two engage in a [[poker]] game in which the loser agrees to get married; soon both are in love and things fall into place like a storybook romance. Heidi Vaughn and June Zachary play the female leads.<ref>{{cite web|url=http://imdb.com/title/tt0959691/?ref_=tt_ep_nx|title=A Full House on ''Death Valley Days''|publisher=Internet Movie Data Base|date=March 14, 1969|accessdate=July 14, 2015}}</ref>

* Murray MacLeod and Dennis Whitcomb were cast as two young men, Cliff and Frank, respectively, released from the [[United States Army]] still living on a temporarily deserted western fort in the 1969 episode, "A Full House." The two engage in a [[poker]] game in which the loser agrees to get married; soon both are in love and things fall into place like a storybook romance. Heidi Vaughn and June Zachary play the female leads.<ref>{{cite web|url=http://imdb.com/title/tt0959691/?ref_=tt_ep_nx|title=A Full House on ''Death Valley Days''|publisher=Internet Movie Data Base|date=March 14, 1969|accessdate=July 14, 2015}}</ref>

* Guy Madison portrayed Luke Short, the operator of the Long Branch Saloon in Dodge City, Kansas, in the 1960 episode "Extra Guns." In the story line, Short battles a corrupt city hall. Jon Lormer]and Wilton Graff also appeared in this episode as rival saloon owner Sutton and political boss A. B. Webster, respectively. Joan Taylor played Mady, the pianist for Short.<ref>{{cite web|url=https://www.imdb.com/title/tt0556609/?ref_=ttep_ep32|title=Extra Guns on ''Death Valley Days''|publisher=Internet Movie Data Base|date=March 14, 1969|accessdate=July 14, 2015}}</ref>

* Guy Madison portrayed Luke Short, the operator of the Long Branch Saloon in Dodge City, Kansas, in the 1960 episode "Extra Guns." In the story line, Short battles a corrupt city hall. Jon Lormer and Wilton Graff also appeared in this episode as rival saloon owner Sutton and political boss A. B. Webster, respectively. Joan Taylor played Mady, the pianist for Short.<ref>{{cite web|url=https://www.imdb.com/title/tt0556609/?ref_=ttep_ep32|title=Extra Guns on ''Death Valley Days''|publisher=Internet Movie Data Base|date=March 14, 1969|accessdate=July 14, 2015}}</ref>

*Jock Mahoney was cast as an engineer, Andy Prentis, in the 1954 episode, "Husband Pro-Tem." In the story line, Prentis is hired by a railroad executive, Alonzo Phelps (Howard Negley) (1898–1983), to negotiate a private agreement with the Indian Chief Black Hawk (Lane Bradford) so that the railroad can be constructed across Indian lands. In his assignment, Prentis soon romantically tangles with Phelps' daughter, Evelyn (Gloria Marshall).<ref>{{cite web|url=https://www.imdb.com/title/tt0556640/|title=Husband Pro-Tem on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=February 21, 2019}}</ref>

*Jock Mahoney was cast as an engineer, Andy Prentis, in the 1954 episode, "Husband Pro-Tem." In the story line, Prentis is hired by a railroad executive, Alonzo Phelps (Howard Negley) (1898–1983), to negotiate a private agreement with the Indian Chief Black Hawk (Lane Bradford) so that the railroad can be constructed across Indian lands. In his assignment, Prentis soon romantically tangles with Phelps' daughter, Evelyn (Gloria Marshall).<ref>{{cite web|url=https://www.imdb.com/title/tt0556640/|title=Husband Pro-Tem on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=February 21, 2019}}</ref>

*Edward Mallory was cast in the 1961 episode, "Lieutenant Bungle." In the story line, Lieutenant Ross, fresh out of West Point, is given the nickname "Bungle" because of his inept ways at a western fort. But when called upon to save his men from an Indian attack, he rises to the occasion. Then he informs Major Galloway ([Philip Ober) that he intends to marry the major's daughter, much to Galloway's surprise and at first reluctance to accept "Bungle" as a son-in-law.<ref>{{cite web|url=https://www.imdb.com/title/tt0556657/|title=Lieutenant Bungle on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=August 29, 2019}}</ref>

*Edward Mallory was cast in the 1961 episode, "Lieutenant Bungle." In the story line, Lieutenant Ross, fresh out of West Point, is given the nickname "Bungle" because of his inept ways at a western fort. But when called upon to save his men from an Indian attack, he rises to the occasion. Then he informs Major Galloway ([Philip Ober) that he intends to marry the major's daughter, much to Galloway's surprise and at first reluctance to accept "Bungle" as a son-in-law.<ref>{{cite web|url=https://www.imdb.com/title/tt0556657/|title=Lieutenant Bungle on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=August 29, 2019}}</ref>