I saw that. Unfortunately, I need the size bigger, which they don't have on e-Bay. As far as references, I use a multiplicity of sources, but mostly the original uniform regulations. I also go to a militaria forum, where members often have original items and photos of the real thing. The Museum of the Marine Corps has been helpful as well. By the way, I'm pretty sure Schippenfabrik went belly up several years ago, which is too bad.