Hall of Science, Official View Book, A Century of Progress Exposition, 1933
Hall of Science page from official booklet.
Florence Fifer Bohrer papers, 1865-1957 at the Dr. Jo Ann Rayfield Archives, Milner Library, Illinois State University (Normal, Illinois). Access entire document online at https://cdm15990.contentdm.oclc.org/digital/collection/rebradref/id/1749