Larch medvirkede i ''[[Jefferson Drum]]'', ''[[Johnny Ringo (TV series)|Johnny Ringo]]'', ''[[Riverboat (TV series)|Riverboat]]'', ''[[Naked City (TV series)|Naked City]]'' (tre episoder), ''[[Stoney Burke (TV series)|Stoney Burke]]'', [[Route 66 (TV series)|''Route 66'']] (tre episoder), ''[[Flygtningen (TV serie)|Flygtningen]]'' (to episoder), ''[[The Invaders]]'', ''[[The Restless Gun]]'' (fire episoder), ''[[Gunsmoke (TV series)|Gunsmoke]]'' (syv episoder), ''[[The Virginian (TV series)|The Virginian]]'' (fire episodes), ''[[Brødrene Cartwright|Bonanza]]'', ''[[Hawaii Five-0]]'', ''[[Mission Impossible]]'' (to episoder), ''[[The Troubleshooters (1959 TV series)|The Troubleshooters]]'', ''[[Bus Stop (TV series)|Bus Stop]]'', ''[[The Law and Mr. Jones]]'', ''[[The Rifleman]]'', ''[[The Feather and Father Gang]]'', mens hans mest kendte rolle var som Anthony Fremonts far i ''[[The Twilight Zone (1959 TV series)|The Twilight Zone]]'’s 1961 episode ".
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