My uncle gave me a rare old book on 1800s chicken care, inscribed in 1870, called "The Practical Poultry Keeper". It's fascinating and very detailed. They fed them everything from grains (oats, barley, buckwheat, rice, Indian corn) to beans, peas, milk, potatoes, meat, and ale. I wish I could share it with everyone, but not sure how! The second half of the book is on Show Chickens.