O'Brien, Ellen; Lyle Benedict (June 2001). "1919, July 21: Dirigible (Balloon) Crash". Deaths, Disturbances, Disasters, and Disorders in Chicago. Chicago Public Library. Archived from the original on 2006-09-27. Retrieved 2007-08-27.
"The Great Tragedy", The Columns of the Illinois Trust & Savings Bank, Chicago [special memorial issue], p. 3, July 1919, archived from the original on 2006-06-20
O'Brien, Ellen; Lyle Benedict (June 2001). "1919, July 21: Dirigible (Balloon) Crash". Deaths, Disturbances, Disasters, and Disorders in Chicago. Chicago Public Library. Archived from the original on 2006-09-27. Retrieved 2007-08-27.
"The Great Tragedy", The Columns of the Illinois Trust & Savings Bank, Chicago [special memorial issue], p. 3, July 1919, archived from the original on 2006-06-20