Frank Clark

The Phantom Cowboy

1935 ・ Sheriff

Rustlers of Red Dog

1935 ・ Judge Collins [Chs. 7, 9, 12]

Western Racketeers

1934 ・ Steve Harding / Tiny Harding

The Border Menace

1934 ・ Banker Harris

Roaring Ranch

1930 ・ Tom Marlin

Outlawed

1929 ・ Seth (as Frank M. Clark)

The Four-Footed Ranger

1928 ・ Handsome Thomas (as Frank M. Clark)

The Hound of Silver Creek

1928 ・ John Lawton

The Bronc Stomper

1928 ・ James Hollister

A Wanderer of the West

1927

Wolf Blood

1925 ・ Pop Hadley

Under the Rouge

1925 ・ Simmons

A Two Fisted Tenderfoot

1924 ・ Herbert Ransom

The Fatal Mistake

1924

The Lone Star Ranger

1923 ・ Laramie

Hands Off!

1921 ・ Capt. Jim Ellison

The Diamond Queen

1921 ・ Julius Zeidt

The Untamed

1920 ・ Sheriff Morris (as Frank M. Clark)

The Rookie's Return

1920 ・ Tubbs

Firebrand Trevison

1920 ・ Judge Lindman

The Lost City

1920 ・ Michael Donovan

Fighting for Gold

1919 ・ Sheriff

The Wilderness Trail

1919 ・ Angus Fitzpatrick

The Tiger Lily

1919 ・ Antonio