At the time , his land included 20,000 acres and 350 head of cattle .
In 1921 , Rancher Harry Otterson constructed the community 's first dipping vat .
At the time , Rancher Harry Otterson 's land included 20,000 acres and 350 head of cattle .
In 1921 , Rancher Harry Otterson constructed the community 's first dipping vat .