Hal Rogers

Simple text describes the parts of a tractor, how they work, and what they do.

How do cherry pickers work? Where are the controls? Why don't they fall over? Learn all about these cool machines in this fascinating book.

Describes the parts of a snowplow, how it works, and the work it does to clear the roads of ice and snow.

Describes the parts of plows, how they work, and what they do.

Describes the parts of an ambulance, how it operates, and the work it does.

Describes the parts of a crane, how it works, and the work it does at a construction site.

A brief introduction to rescue helicopters, what they do, and how they work.