At the top of any list of great Western films would have to be: LONESOME DOVE


A close second would be MONTE WALSH ---the earlier one with Lee Marvin----not the recent travesty that Tom Selleck did.

followed by:

The Mountain Men (Charlton Heston)
Man In The Wilderness
Black Robe
Dead Man
Conagher
Treasure Of The Sierra Madre
Walk About
Ulzana's Raid
Adventures Of A Young Man (from Hemingway's NICK ADAMS stories)
Smoke Signals
Lone Star
Viva Zapata (written by John Steinbeck)
Butch Cassidy And The Sundance Kid
Dead Man's Walk
Jeremiah Johnson (They shoulda left the liver-eating in though.)
Pancho Villa


There are more, but these are what come to mind.
Art Thieme