Explores the wheel through projects involving rollers, carts, wagons, and other devices using wheels to function.

Provides instructions for making and using a variety of machines, including levers, diggers, cranes, and pulleys.

A biography of the black American author whose novels dealt with the social problems of the American Negro.

On the day after his thirtieth birthday, Josef K, a bank teller, is arrested by two mysterious agents of an unspecified organization. Confused and shocked, Josef inquires about the crime he is being accused of, but the agents will not answer, leaving Josef to decide what he feels most guilty for. Though he is not imprisoned, Josef is told to await further instructions. Tortured by the unknown, Josef returns to his home and tries to guess what he could...