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A reference book dealing with the small craft of rivers and canals and the large sailing ships, steamships, warships, and cargo and passenger ships.

A reference book dealing with simple machines, machines in the home, transportation and power machines, and large machinery found on the farm, in construction, and in factories.

A reference book dealing with early animal life on earth from worms to dinosaurs and with man's evolution.

Describes the sights and sounds to be found in any large city.

A reference book dealing with prehistoric man; such early civilizations as the Sumerians, Minoans, and Babylonians; and later societies including the Vikings, Normans, and Mayas.