The Ludington Building is the earliest-surviving, steel-frame building in Chicago, Illinois. It is located in the Chicago Loop community area. It was designed by William Le Baron Jenney and was named a Chicago Landmark on June 10, 1996. It was added to the National Register of Historic Places on May 8, 1980. The Ludington Building "was commissioned by Mary Ludington Barnes for the American Book Company"; presently it is one of twenty buildings that comprise the campus of Columbia College Chicago. References Notes External links Architectural history Commercial buildings completed in 1891 Chicago school architecture in Illinois Commercial buildings on the National Register of Historic Places in Chicago Chicago Landmarks University and college academic buildings in the United States