A Bit of Blue Ribbon
A Frontier Hero
A Girl of the West
A Life for a Kiss
Alkali Ike’s Auto
Bank Robbery
Broncho Billy and the Greaser
Broncho Billy and the Rustler’s Child
Broncho Billy and the School Mistress
Broncho Billy’s Christmas Dinner
Broncho Billy’s Fatal Joke
Broncho Billy’s Last Hold-Up
Broncho Billy’s Narrow Escape
Broncho Billy’s Sentence
By the Sun’s Rays
Coeur Ardent
De Landverhuizers
De wigwam
From Leadville to Aspen: A Hold-Up in the Rockies
Hell’s Hinges
How States Are Made
Juan and Juanita
Martyrs of the Alamo
Nel paese dell’oro
Passing of the Oklahoma Outlaws
Sage Brush Tom
Salomy Jane
Saved by the Pony Express
Slim Jim’s Last Chance
The Abernathy Kids’ Rescue
The Bargain
The Battle at Elderbush Gulch
The Craven
The Deputy’s Peril
The Girl of the Golden West
The Greater Love
The Great Train Robbery
The Indian Brothers
The Invaders
The Lieutenant’s Last Fight
The Life of Buffalo Bill
The Post Telegrapher
The Renegades
The Ruse
The Squaw Man
The Struggle
The Tomboy on Bar Z
The Virginian
The Witch of the Everglades
When the West Was Young
White Fawn’s Devotion

Internet sources:
List of Western films before 1920
The Silent Western
Filmsite: Western Films (1-5)
Images: Silent Western