They actually have these in the Smithsonian museum gift shops in D.C. so the federal government is a participant. This one came from the Air and Space Museum.
Ill have to take some pictures of mine, some of the designs on some didnt come out to well but thats why I love em. The 9/11 ones are very cool. I'll have to visit the new memorial at ground zero sometime. Ill post the pictures when I get them. All are from the UP of Michigan or Mackinaw City here in Michigan.