Today machines to sweep streets- the machines alone represent a more than 3.6 billion dollar annual market- are recognized around the world. But the mechanical street sweeper is a rather new invention that took some time to sweep a skeptical public off its feet..
Sixty six years ago a new television show premiered. Bonanza, the saga of the Cartwrights of the Ponderosa ranch was made for the express purpose of selling color televisions, and it brought color to many lives.