[Michael.SF.]

and how do we know for sure your photo is not an internet photo shop fake?

[Non-Sequitur]

Because I’ve seen in in books going back decades. Besides, why would a rebel Louisiana regiment be wearing Union winter uniforms? Especially in light of it’s brief existence?

[Bubba Ho-Tep]

Here's the lithograph that was made from the original photo. Or is that a fake, too? If so, you'd better let the Smithsonian know.