One of the first Anglo-Americans to record their travels to New Mexico, Dr. Rowland Willard (1794-1884) journeyed west on the Santa Fe Trail in 1825 and then down the Camino Real into Mexico, taking notes along the way. This edition of the young physician's travel diaries and subsequent autobiography, annotated by New Mexico Deputy State Librarian Joy L. Poole, is a rich historical source on the two trails and the practice of medicine in the 1820s.

Few Americans knew much about New Mexico when Willard set out on his journey from St. Charles, Missouri, where he had recently...