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In page Karl Swenson:

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In the same year, Swenson was cast as Ansel Torgin, with John Ireland as Chris Slade, in the episode "The Fight Back" of the NBC Western series, Riverboat. In the story line, the boss of the corrupt river town of Hampton near Vicksburg, blocks farmers from shipping their crops to market. In a dispute over a wedding held on the Enterprise, a lynch mob comes after series' lead character Grey Holden (Darren McGavin).[citation needed]