Tractors & Bulldozers

And now for some boy toys: Did you know that the term bulldozer technically refers only to a shovel-like blade? Over the years people have come to associate the term bulldozer to the entire vehicle both blade and crawler tractor combined. Did you also know that the word "tractor" comes from what previously had been called gas traction engines? Tractors were named after the new type of engine used in them.

• Photo Gallery - Antique Tractors