Sophia Lambton’s “The Callas Imprint” is a comprehensive biography of Maria Callas as explored through Lambton’s uncovering of various private letters, recordings, interviews, the late Nicholas Petsalis-Diomidis’s studies of her early years, Renzo Allegri’s descriptions, and Stelios Galatopoulos’s analyses. Ultimately, it is the result of Lambton’s own self-determination and evocative of her power to will something like this into existence.  {…}