Visiting Scholar Debra H. Sowell, PhD, offers a lively description of America’s first full-length Swan Lake, produced by the San Francisco Ballet in 1940, and choreographed by Artistic Director Willam Christensen. She begins by describing the role of a dance historian, and references the interviews she conducted in preparing her book, The Christensen Brothers, An American Dance Epic, the definitive biography of the three brothers, Willam, Harold, and Lew.