Pulleys to the Rescue (Simple Machines to the Rescue) - Library Binding - GOOD

Inclined Planes to the Rescue (Simple Machines to the Rescue) - GOOD

Wedges to the Rescue Reinforced Library Binding Sharon Thales

Screws to the Rescue (Simple Machines to the Rescue) - Library Binding - GOOD

Ambulances (Mighty Machines) - Library Binding By Lindeen, Carol K - GOOD

What Are Wedges (Looking at Simple Machines) - Library Binding - GOOD

Zoo Scientists to the Rescue - Library Binding By Patricia Newman - GOOD