The 6-cent stamp in tribute to HemisFair '68 was first placed on sale on March 30, 1968, at San Antonio, Texas, where the exposition opened April 6, 1968...The exposition's theme was "The Confluence of Civilizations in the Americas," and this was echoed in the stamp design Concepts | Communication | Travel Destinations | Vertical | The Americas
High Resolution JPEG Picture of The 6-cent stamp in tribute to HemisFair '68 was first placed on sale on March 30, 1968, at San Antonio, Texas, where the exposition opened April 6, 1968...The exposition's theme was "The Confluence of Civilizations in the Americas," and this was echoed in the stamp design [471360609] stock photo
