Bertha Muzzy Sinclair
Original work, Writer · 10 titles
Titles
Chip of the Flying UFilm· 1939Original work
King of the RodeoFilm· 1929Original work
Points WestFilm· 1929Original work
Chip of the Flying UFilm· 1926Original work
Ridin' ThunderFilm· 1925Original work
Taming the WestFilm· 1925Original work
The Galloping DevilFilm· 1920Original work
North of Fifty-ThreeFilm· 1917Writer
Chip of the Flying UFilm· 1914Writer, Original work
Shotgun JonesFilm· 1914Writer