2nd, 6th and 7th Wisconsin, 19th Indiana, 24th Michigan
24th Michigan Monument Gettysburg Pa
I'm not sure that MMP goes through a distributor. They may ship directly to retailers.
My understanding from my FLGS is none of the three distributors he deals with carry MMP. To get them he would have to deal directly with MMP and MMP allows him such a small mark up that they aren't worth carrying.