CS knapsack marks/stamps?

[Iceman]

Did any knapsacks produced in the South ever have markings or stamping on them in any way? For example, the I&C bag had a stamp on the inside of the flap (correct?). So, if any Southern shops/makers placed any sort of marking on or in their knapsacks, does anyone have the photographic evidence or source material to support it, and could you share this info? To be more specific; the style of knapsack that we call the Mexican War knapsack, does anyone know of a Southern shop making this style of pack with a makers mark, quartermaster stamp, etc.?

Thanks.