Dan Brown released his fourth novel in the Da Vinci Code series, Inferno, which became an instant success.
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The Talyllyn Railway in Wales became the first railway line in the world to be run solely by volunteers.
The USA's first space station, Skylab, was launched into Earth's orbit.
Settlers funded by the Virginia Company of London established Jamestown.
We Want Beer! parade was held.
Delegates started to gather in Philadelphia to draw up the US constitution.