Yep, Don, I do. Well, at least I remember the stories from my grandmother who was raise in the plains of Nebraska. They use to hall wagon loads of cobs from the elevators and store it for Winter heat. My wife and her family did the same in Iowa in the late 40s and 50s.
Out here I know the canaries chop all the remains for cattle and hog food. I suppose you could conttact with them to have them save out the cobs and dry them in our short summer months, for Winter fuel.