In 1963, the Press published Viola Spolin's landmark volume, Improvisation for the Theater: A Handbook of Teaching and Directing Techniques, which has sold more than 100,000 copies since its publication.
În 1963 Northwestern University Press a publicat volumul Improvisation for the Theater: A Handbook of Teaching and Directing Techniques al Violei Spolin, care s-a vândut în mai mult de o sută de mii de exemplare de la publicarea sa.