Years ago when I was reenacting I met a vendor who sold printed T-shirts. His name was Julian Riley from Mississippi. His shirts displayed very excellent renderings of Confederate flags, specific ones. He usually had twenty or thirty displayed at his tent and I was struck by the accuracy of the ones that I was already familiar with. He has or had a website (I don't think he's still producing them) that listed the 5th/13th as among his offerings. I spoke to him on the phone about my ongoing project and that I was particularly interested in the 5th/13th Arkansas flag. He very graciously sent me an image of his T-shirt illustration for that flag. I asked him his sources and he looked in the file but could not identify a source. He said it had been sometime and he could not remember. Fair enough. I surely do identify with such. The illustration is definitely of the Spring 64 issue type and displays the honors that would have been on the regimental flag (including "Belmont" a possible clue to the image's historical accuracy).
I have created a computer image from his information and would dearly like to include this flag in my upcoming book but cannot justifiably do so based on a T-shirt. It is a very important flag to me in that it is the sole vexillological symbol memorializing the tragic death of Gen. Patrick Cleburne at Franklin.
I'm sure there are quite a few of us who would love to see it surface.