Martha Tedeschi is curator of prints and drawings at the Art Institute of Chicago and co-author of the catalogue raisonné The Lithographs of James McNeill Whistler (Yale), winner of the Wittenborn Prize. Judith Walsh, formerly paper conservator at the National Gallery of Art, Washington, is a professor in the Art Conservation Program at Buffalo State University. Kristi Dahm is assistant conservator of prints and drawings at the Art Institute of Chicago.