A sequel to the award-winning Buffalo Dance, Frank X Walker's When Winter Come: The Ascension of York is a dramatic reimagining of Lewis and Clark's legendary exploration of the American West. Grounded in the history of the famous trip, Walker's vibrant account allows York -- little more than a forgotten footnote in traditional narratives -- to embody the full range of human ability, knowledge, emotion, and experience. Knowledge of the seasons unfolds to York "like a book," and he "can read moss, sunsets, the moon, and a mare's foaling time with a touch." During the journey, York forges a spiritual connection and shares sensual delights with a Nez Perce woman, and Walker's poems capture the profound feelings of love and loss on each side of this ill-fated meeting of souls. As the perspectives of Lewis, Clark, Sacagawea, and others in the party emerge, Walker also gives voice to York's knife, his hunting shirt, and the river waters that have borne thousands of travelers before and after the Lewis and Clark expedition. The alternately heartbreaking and uplifting poems in When Winter Come are told from multiple perspectives and rendered in vivid detail. When Winter Come exalts the historical persona of a slave and lifts the soul of a man; York ascends out of his chains, out of oblivion, and into flight.