This book is even better than Buscombe's book on "Stagecoach." It is clear this movie has a stronger emotional hold on him than the earlier film. Buscombe does a very thorough job, comparing where the film deviates from the novel and the script.
He does something I have seen no other writer on "The Searchers" do, and that is to discuss the film's music, which is based on the 19th Century song "Lorena," which has a theme about separated lovers that reflects the Ethan-Martha relationship.
The book concludes with the changing critical reception of "The Searchers." Frankly, I think this is a fine, and fair assessment of the movie, one free from a lot of cant and academic jargon. I wish Buscombe would write a major book about the Western genre.