Daphne Barbour, senior object conservator, and Shelley Sturman, head of object conservation, National Gallery of Art. The National Gallery of Art holds the greatest collection in the world of original wax sculptures created by Edgar Degas. Celebrating the publication of the Gallery's newest Systematic Catalogue, Edgar Degas Sculpture, Shelley Sturman and Daphne Barbour, two of the authors who are senior conservators, discuss their extensive research on the art, history, and techniques of the Gallery's unsurpassed collection of 52 works in wax, clay, and plaster, as well as a dozen posthumously cast bronzes.