17 Oct 2015 40th. Letterheads Anniversary Meet at the American Sign Museum Ci. Ohio Sept. 24-27 2015 When I grow up, I want to be like Bill Riedel David Butler a Letterhead Superman My Classic Hand Pinstriping Class with Tod Hanson. The classes final exam, attacking a dumpster. 40th. Anniversary a Jam at the American Sign Museum Ci. Ohio.