I have no means to identify any individuals or even the company, but I possess a photo of the 78th Illinois taken in what appears to be Georgia--possibly Tennessee. My great-grandfather served with the 78th until capture and imprisonment at Andersonville. The original currently resides at Western Illinois University. Along with that photo, I have a reunion photo of the 78th taken after the turn of the century. I would be happy to send them to you at your request. Simply provide your email.