"History of Altgeld Hall". Department of Mathematics, University of Illinois at Urbana-Champaign. Archived from the original on January 16, 2017. Retrieved July 27, 2017.
"History of Altgeld Hall". Department of Mathematics, University of Illinois at Urbana-Champaign. Archived from the original on January 16, 2017. Retrieved July 27, 2017.