"Literary Landmark: Carl Sandburg State Historic Site", American Library Association, March 29, 2017.
http://www.ala.org/united/products_services/literarylandmarks/landmarksbyyear/2015/sandburg (Accessed April 1, 2023)
Document ID: 8dfa5758-28b9-a974-85f7-c16b0c5ede52
