Lassie

Season 15, Episode 22

Episode Title: Walden

Air Date: 1969-03-02

Overview:

Lassie befriend Patricia Prescott, who refers to herself as ""Walden,"" a free-spirited teenage girl, who has left home to live in the wilderness like her idol, Henry David Thoreau, after the young woman cleans up a picnic area. But both of them are endangered by aftershocks from an offshore earthquake.