The United States issued a 5 cent stamp commemorating the 100th anniversary of Canadian confederation. The stamp was first placed on sale at the United States Pavilion at Expo 67 in Montreal, on May 25, 1967. This was the first time a United States first day cover had carried the cancellation from another nation.
Post Office Lobby Poster
Stamp Ceremony Program
Pavilion "Visa" and First Day of Issue Markings
Buckminster Fuller's Geodesic dome
I applied the cancellation myself. The handstamp was on an unattended table in the U.S. pavilion.
The US pavilion "Visa". Each pavilion had a visa which could be stamped on visitors' "passports" (week-long or seasonal tickets in the form of passports).
First Day Cover from the Postmaster General
National Day of the United States Jazz Festival Program
First Day Covers
Advertizing First Day Covers
Union Carbide (Marg cachet)
Elliott-Marion
Stewart-Warner Corporation
University of Louisville Century Club (Prestige Reaction cachet)
Atlas Chemical Industries, Inc. (Artcraft cachet)
Return address printed on the back
Ayerst Laboratories (Artcraft cachet)
Return address printed on back
United Airlines (Artcraft cachet no return address)
