I seem to recall this question asked before and there being no good answer for the C model. Maybe close is as close as one can get until something new is discovered and posted to the internet. I'm quite sure that there was one, though.
I have one. I got it from Mike Butkus of the great butkus camera manuals collection. You need to send him an email requesting it specifically; it isn't available for direct download. And think about dropping him some money to keep that site going.