The ban on Sunday baseball was lifted in Washington, D.C., making it the 3rd city to do so.
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The USA's first space station, Skylab, was launched into Earth's orbit.
Underground America Day was first observed, which recognizes the approximately 6,000 people who live in some form of underground architecture across North America.
The rockumentary film featuring The Who titled 'Kids Are All Right' premiered at the Cannes Film Festival.
The Talyllyn Railway in Wales became the first railway line in the world to be run solely by volunteers.
Dan Brown released his fourth novel in the Da Vinci Code series, Inferno, which became an instant success.
