Mari Sandoz’s The Battle of the Little Bighorn encouraged a change in how Americans viewed this infamous fight. By the mid-twentieth century a towering Custer myth had come to dominate the national psyche as a tale that confirmed national exceptionalism and continental destiny. Sandoz set out to dismantle this myth in an intimate account of the battle told from multiple perspectives. Although the resulting book received mixed reviews at the time, it has emerged through the decades as a visionary reinterpretation of the battle and a literary masterpiece. Decades in the making, The Battle of the Little Bighorn was the renowned western writer’s last book, published after her death in 1966. The scholarly essays in this collection contextualize Sandoz’s work in the moment of its writing, situating her treatment of the past within the pivotal moments of her present. The essays address her incorporation of contemporary issues such as the Vietnam War, sensory history, gender study, recentering the Native perspective, environmentalism, and Sandoz’s personal challenge to completing her last book. The innovative insights into Sandoz’s perspective of the Battle of the Little Bighorn bring the historical acts involved, and her treatment of the site in which they occurred, into the twenty-first century.