Hey StamperDude,
You got an image or are going to keep it a secret?

I've been doing some reading on those and that one wasn't mentioned...

The 1876 show was the 100th year of our country and was the 1st of the great U.S. Expositions.
Thereafter came
1893 Colombian Exposition
1895 Cotton States Exposition
1901 Pan-American Exposition
1904 Louisiana Purchase Exposition
Lewis & Clark
(I think I forgot a couple)
and other equally well know but ticket aren't nearly as attractive.