Commissioned by Ferdinand Peck and produced by architects Louis Sullivan and Dankmar Adler--soon to be leaders of the Chicago School--in 1889, the Auditorium Building was a wondrous complex, housing a hotel, offices, stores, and a theater. Adler's engineering skills overcame the problem of a foundation that had to support an unevenly distributed weight; Sullivan designed the stunning theater, which was spanned by four elliptical arches studded with...