Terms commonly used to reference bigfoot / sasquatch in Illinois have been abominable snowmen, ape, bigfoot, creature,  critter, hairy gorilla-type, hairy human, hairy  monster, killer bear, red creature, roaming madman, sasquatch, what is it, what’s it, and wildman. Historically however, like it or not, most news sources references use the term monster.
Usually the monster name is associated with a specific town, creek or road name. I will post a series of articles that include links back to the source material for that particular “monster”.
Farmer City (Salt Creek) Monster
Sangamon River Bottoms Monster
