Barbara Swan
... that Barbara Swan illustrated books by two Pulitzer Prize-winning poets?
... that <b id="mwASA"><a href="./Barbara_Swan" id="mwASE" rel="mw:WikiLink" title="Barbara Swan">Barbara Swan</a></b> illustrated books by two <a href="./Pulitzer_Prize_for_Poetry" id="mwASI" rel="mw:WikiLink" title="Pulitzer Prize for Poetry">Pulitzer Prize</a>-winning poets?