Earliest known literary reference to Hostess snacks (courtesy Peter J)

Godwin, Caleb Williams:

"And he made the hell of a rumpus, and sent away Kit to prison in a twinky; and I believe he would have been hanged: for when two squires lay theyir heads together, they do not much matter law, you know; or else they twist the law to their own ends, I cannot exactly say which; but it is much at one when the poor fellow's breath is out of his body." (244)