A two volume book on Degas' Sculpture. Volume I, entitled Degas' Little Dancer, Aged Fourteen, the first version, analyses all the visual, technical and documentary evidence that Degas reworked his Little Dancer wax statue after 1903. This evidence allows one to deduce that a recently uncovered plaster of the Little Dancer records an earlier version of Degas famous wax. Volume II analyses some 74 other Degas plasters.