It's very easy - rather than discount what has been provided in this thread by several knowledgeable people, go to the actual sutler/vendor offering a cotton product and ask them what original they based it upon.
Originally Posted by California Joe
Moderator and Sewer of Historical Clothing and Tall Tales
"But our opportunity to learn and grow, to communicate the richness of the lives that have gone before us, that does not change. We do not outgrow it. It does not tatter and fall apart in our hands..." -Mrs. Terre Lawson, 2010