The living legend performing on the Oscar Brandt Hootenany television show very, very early on in her career, before she took the last name of her first husband, Chuck Mitchell, and influenced generations to come.
There are more performances from this broadcast online as well, but this one (at 1:30) and her return to the show in 1966 are my favorites. Joni was born to take the highway, indeed, all the way from Saskatoon to everywhere.