Bertha Muzzy Bower/ Mrs. Sinclair/ Mrs. Cowan (1871-1940) was an author of western fiction. Among her works are: Chip, of the Flying U (1904), The Happy Family (1907), The Range Dwellers (1907), The Lure of the Dim Trails (1907), The Long Shadow (1909), The Lonesome Trail and Other Stories (1909), Good Indian (1912), Lonesome Land (1912), The Gringos (1913), The Uphill Climb (1913), Flying U Ranch (1914), Jean of the Lazy A (1915), The Flying U's Last Stand (1915), The Heritage of the Sioux (1916), The Phantom Herd (1916), The Lookout Man (1917), Starr, of the Desert (1917), Skyrider (1918), Cabin Fever (1918), The Thunder Bird (1919), The Quirt (1920), Cow-Country (1921), Casey Ryan (1921), The Trail of the White Mule (1922), The Parrowan Bonanza (1923), The Voice at Johnnywater (1923), The Bellehelen Mine (1924), The Eagle's Wing (1924), Meadowlark Basin (1925), Desert Brew (1925), and Van Patten (1926).