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**************