She became one of the most recognizable women of the American West. But how much of the story was actually true? Martha Canary—better known as Calamity Jane—spent much of her life moving through railroad towns, army camps, mining settlements, and freight routes at a time when survival often depended on taking whatever work was available. She hauled freight, traveled with military expeditions, wore men’s clothing when the work demanded it, and built a reputation that followed her from town to town. Then she began selling a version of her own life. A short autobiographical pamphlet transformed hard labor, poverty, arrests, and uncertainty into a marketable frontier adventure filled with famous names and dramatic exploits. She claimed connections to George Armstrong Custer and Wild Bill Hickok, described dangerous rides and daring captures, and helped create a public character that would eventually become more famous than the woman herself. This biography examines the surviving evidence behind those stories, separating contemporary records from later memories, publicity, and legend. It follows the real woman through the Black Hills gold rush, military campaigns, Deadwood, dime museums, and a rapidly changing West while asking a larger question: What happens when a person discovers that the story people want to buy is worth more than the life she actually lived? Accessible, engaging, and grounded in historical records, this is a revealing look at fame, mythmaking, poverty, memory, and the complicated woman behind one of the West’s most enduring legends.