Writing · b. 1871 Bertha Muzzy Sinclair Biography Novelist and screenwriter. Wrote many screen adaptations of her own novels in the 1910's. Other Credits Chip of the Flying U Novel 1939 Points West Novel 1929 King of the Rodeo Story 1929 The Flying U Ranch Novel 1927 Chip of the Flying U Novel 1926 Ridin' Thunder Novel 1925 Taming the West Novel 1925 The Galloping Devil Novel 1920 North of Fifty-Three Writer 1917 A Modern Knight Story 1916 How Weary Went Wooing Story 1915 Chip of the Flying U Writer 1914 When the Cook Fell Ill Screenplay 1914 Shotgun Jones Writer 1914 Agent-readable