Graham, I'd suggest that you contact the Collection of Advertising History in the Archives Center at the National Museum of American History (Smithsonian Inst.). The Archives Center's e-mail address is: [log in to unmask] (Note: the Archives Center at NMAH is not to be confused with the Archives Division at NASM). Paul Silbermann Paul Silbermann National Air and Space Museum [log in to unmask] Archives Division **************These opinions are mine, not NASM's**************