Hill, Lee Sullivan

Introduces readers to dams, their purposes, and how they may be built.

Introduces different kinds of bridges, their materials, construction, and maintenance.

An introduction to the variety and beauty of American roads, past and present.

Describes different canals and explains their usefulness.

Introduces some different modes of transportation used in rural areas, including cars, trucks, bicycles, sleds, ferry boats, and even walking.

An introduction to some of the different ways people get around in cities, from walking and biking to ferry boats and skates.