McCabe & Mrs. Miller is a 1971 picture by director Robert Altman.
One of Altman's typically naturalist films, the director has called McCabe an "anti-western film" because the film ignores or subverts a number of Western conventions.
The screenplay is by Robert Altman and Brian McKay from the novel McCabe by Edmund Naughton. The cinematography is by Vilmos Zsigmond and the soundtrack includes three songs by Leonard Cohen which had been issued on his 1967 album Songs of Leonard Cohen.
("The Stranger Song",Sisters of Mercy" and the key theme "Winter Lady")
Julie Christie was nominated for an Academy Award for Best Actress for her role. Roger Ebert, a leading critic, has called the film "perfect."
Via Wiki and more plot here....

I own the DVD special edition which tells about the inevitable immersing of method acting as all on set never left and were forced into the seedy living shown on screen.
Filmed in freezing outskirts of Vancouver, the crew were mainly Vietnam dodgers dressed as characters as well so while filming the town could be worked on being a part of the movie's script anyway.
An absolute MUST SEE!
The film trailer here...