I saw this, and as I did not already find a reference to it, thought it too valuable not to share.
Thirty one years ago I started growing rare lines of cold hardy northern corn for my family's grain in Montana. Modern corn wouldn't mature in the mountains where I lived, so I had to work with heirloom Native corns. I learned that about 12 lines of Mandan Indian corn had been saved in the national seed bank, but those lines appear somewhat inbred. I began a search for corn still kept alive by Indian families and descendants of homesteaders. After years of evaluation and crossing I eventually created a large and diverse gene pool. I exposed this corn to the severe stress of my Montana home, selecting only the hardiest to breed from. I called this Painted Mountain Corn.