Bertha Muzzy Sinclair

Filmography · 10 credits

• 1939Chip of the Flying U · Writer ★ 5.6
• 1929Points West · Writer
• 1928King of the Rodeo · Writer
• 1927The Flying U Ranch · Writer ★ 1.3
• 1926Chip of the Flying U · Writer ★ 5.9
• 1925Taming the West · Writer
• 1925Ridin' Thunder · Writer
• 1921The Wolverine · Writer ★ 7.0
• 1920The Galloping Devil · Writer
• 1917North of Fifty-Three · Writer