Changes

*Hedley Mattingly was cast as the [[photographer]] Eadweard Muybridge in the 1964 episode "The $25,000 Wager." In the story line, former Governor Leland Stanford, played by Harry Holcombe (1906–1987), a race-horse owner, hires Muybridge, to determine by multiple cameras whether all four legs of a horse are briefly off the ground while trotting. Diane Brewster was cast as Muybridge's wife, Flora.​ Ken Mayer was cast as Marshal Hobe Martin in the 1962 episode "Girl with a Gun." In the story line, an outlaw's vengeful daughter, Jennie Metcalf (Anne Helm), joins her father's gang after he is justifiably killed in a showdown with the marshal.<ref>{{cite web|url=https://www.imdb.com/title/tt0556622/?ref_=ttep_ep11|title=Girl with a Gun on ''Death Valley Days''|publisher=Internet Movie Base|accessdate=December 31, 2018}}</ref>

*Hedley Mattingly was cast as the [[photographer]] Eadweard Muybridge in the 1964 episode "The $25,000 Wager." In the story line, former Governor Leland Stanford, played by Harry Holcombe (1906–1987), a race-horse owner, hires Muybridge, to determine by multiple cameras whether all four legs of a horse are briefly off the ground while trotting. Diane Brewster was cast as Muybridge's wife, Flora.​ Ken Mayer was cast as Marshal Hobe Martin in the 1962 episode "Girl with a Gun." In the story line, an outlaw's vengeful daughter, Jennie Metcalf (Anne Helm), joins her father's gang after he is justifiably killed in a showdown with the marshal.<ref>{{cite web|url=https://www.imdb.com/title/tt0556622/?ref_=ttep_ep11|title=Girl with a Gun on ''Death Valley Days''|publisher=Internet Movie Base|accessdate=December 31, 2018}}</ref>

*Lin McCarthy (1918–2002) was cast as Dr. Tom Bell in the 1959 episode "The Scalpel and the Gun," the story of a frontier doctor whose indifference contributed to the death of a woman. Faced with disdain from his fellow settlers, he joins an outlaw gang and ultimately is hanged.<ref>{{cite web|url=https://www.imdb.com/title/tt0556876/|title=The Scalpel and the Gun on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=January 23, 2019}}</ref>

*Lin McCarthy (1918–2002) was cast as Dr. Tom Bell in the 1959 episode "The Scalpel and the Gun," the story of a frontier doctor whose indifference contributed to the death of a woman. Faced with disdain from his fellow settlers, he joins an outlaw gang and ultimately is hanged.<ref>{{cite web|url=https://www.imdb.com/title/tt0556876/|title=The Scalpel and the Gun on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=January 23, 2019}}</ref>

*Patty McCormack]appeared as young Virginia Reed in the 1960 episode, "A Girl Called Virginia," with John Anderson]as her stepfather, James F. Reed. Edward Platt was cast as Frank Graves. In the story line, the Donner Party crosses the Sierra Nevadas, but the Reeds are banished after a dispute ends in a death. Virginia proves helpful beyond her years as the family faces great hardship while headed to Sutter's Fort, California.<ref>{{cite web|url=https://www.imdb.com/title/tt0556538/|title=A Girl Called Virginia on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=October 10, 2018}}</ref>

*Patty McCormack, the child star of ''[[Peck's Bad Girl]],'' appeared as young Virginia Reed in the 1960 episode, "A Girl Called Virginia," with John Anderson as her stepfather, James F. Reed. Edward Platt was cast as Frank Graves. In the story line, the Donner Party crosses the Sierra Nevadas, but the Reeds are banished after a dispute ends in a death. Virginia proves helpful beyond her years as the family faces great hardship while headed to Sutter's Fort, California.<ref>{{cite web|url=https://www.imdb.com/title/tt0556538/|title=A Girl Called Virginia on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=October 10, 2018}}</ref>

* [[Ann McCrea]] was cast in three episodes, including Melinda Pratt in "Mr. Bigfoot" (1956) and "Pirates of San Francisco" (1960).

* [[Ann McCrea]] was cast in three episodes, including Melinda Pratt in "Mr. Bigfoot" (1956) and "Pirates of San Francisco" (1960).

* Jody McCrea was cast as the historical Lieutenant [[John J. Pershing]] in the 1962 episode, "To Walk with Greatness." In the story line,  Lt. Pershing defeats his sergeant Robert J. Wilke in a fight, gaining the respect of his troop which he needs when pursuing three outlaws (chiefly Bing Russell as Jake Conlan) who endanger a treaty with the [[Zuni]] headed by Nataha, Eugene Iglesias. Frank Ferguson was cast as Colonel Carr and Yvonne Craig as Emma.<ref>{{cite web|url=https://www.imdb.com/title/tt0556911/?ref_=ttep_ep22|title=To Walk with Greatness on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=December 31, 2018}}</ref>

* Jody McCrea was cast as the historical Lieutenant [[John J. Pershing]] in the 1962 episode, "To Walk with Greatness." In the story line,  Lt. Pershing defeats his sergeant Robert J. Wilke in a fight, gaining the respect of his troop which he needs when pursuing three outlaws (chiefly Bing Russell as Jake Conlan) who endanger a treaty with the [[Zuni]] headed by Nataha, Eugene Iglesias. Frank Ferguson was cast as Colonel Carr and Yvonne Craig as Emma.<ref>{{cite web|url=https://www.imdb.com/title/tt0556911/?ref_=ttep_ep22|title=To Walk with Greatness on ''Death Valley Days''|publisher=Internet Movie Data Base|accessdate=December 31, 2018}}</ref>