The Society of Architectural Historians will present an expanded tour program of its National Historic Landmark headquarters, the Charnley-Persky House (1891-92), designed by Adler & Sullivan. The Charnley-Persky House is one of the few extant buildings that displays the combined talents of Louis Sullivan and his draftsman at the time, Frank Lloyd Wright, and is recognized as a seminal work in the development of modern residential design.