Illiopolis
Business Association 
Illiopolis
Business Association
The History of Illiopolis
Sesquicentennial Celebration 2006
Formosa Plastics Corporation Explosion 2004
Illiopolis Centennial History Book
Excerpts from the State center record of 1901
The Development of the Prairies
A brief history written by Gene Hall
Ghosts of the Sangamon Bomb Factories