Bertha Muzzy Sinclair or Sinclair-Cowan, née Muzzy (1871–1940), better known by her pen name B. M. Bower, was an American author who made a significant contribution to the genre of Western fiction. With over thirty years of writing career, she penned more than sixty novels which were admired for their authentic portrayal of the life and spirit of the Old West. B. M. Bower was born in Minnesota and moved to Montana, drawing inspiration from her experiences in the American frontier for her writings. Her work is characterized by strong narratives laced with romance, wit, and a deep appreciation for ranch life. One of her notable works, 'Cow-Country' (1921), exemplifies Bower's literary style, whose genuine cowboy dialogue and vivid descriptions of the Western landscape charmed the readers and critics alike. Bower's narratives often centred around capable, independent female characters, which was forward-thinking for her time and offered a refreshing divergence from traditional gender roles. Her works have been acknowledged for both their entertainment value and historical significance, as they capture the spirit and challenges of cowboy life in the early 20th century American West. Bower was a prolific storyteller, and her contributions to Western literature endure as a celebration of a unique chapter in American culture and history.