I have one or two Exhibition Souvenirs produced by the United States Postal Service [USPS] for Philatelic Exhibitions. They were available at the USPS Stand or those of their agents.
Does any one know of any others or where I can find a list ?
Or. better still, does anyone have any they want to part with ?
Any info gratefully received.

Naposta '78, Frankfurt. May 20th -25th.
Excellent reproductions and German Text.

No change in Postmaster come 1980.
The card below was printed by the Bureau of Engraving, Washington DC and shows the 2c Founding of Jamestown Commemorative of 1907.
Another fine effort and lovely show souvenir.

Londonbus1