![Discothumb](http://rack.2.mshcdn.com/media/ZgkyMDE2LzA1LzEyLzYzL2Rpc2NvdGh1bWIuNjNkNDMuanBnCnAJdGh1bWIJNTc1eDMyMyMKZQlqcGc/0dd1a60e/47a/discothumb.jpg)
Image: David Redfern/Redferns/Getty Images
When these stock photos were shot in the early 1970s, disco was a new phenomenon — and it was still cool.
Derived from discothèque, the name for French nightclubs that played records instead of live music, early disco emerged in the...