In search of York
Subtitle: the slave who went to the Pacific with Lewis and Clark
By: by Robert B. Betts.
Publisher: Colorado Associated University Press
Published: 1985
Place of publication: Boulder, Colo
Number of pages: 182
Subjects: York,  -- ca. 1775-ca. 1815.; Slaves  -- West (U.S.)  -- Biography.; West (U.S.) -- Biography.
Notes: Includes index.

Bibliography: p. 173-178.