Passage: In 1953, director Elia Kazan was looking for a substantive actor to play the emotionally complex role of 'Cal Trask', for screenwriter Paul Osborn's adaptation of John Steinbeck's 1952 novel East of Eden. The lengthy novel deals with the story of the Trask and Hamilton families over the course of three generations, focusing especially on the lives of the latter two generations in Salinas Valley, California, from the mid-19th century through the 1910s.

Question: Where did the Trask and Hamilton families lay their roots?
Salinas Valley, California