Henry Carter Hull

Describes how crystals form in nature, how crystals are grown artificially, and how crystals are used in industry. Numerous color photos with text identify the various gemstones.

Discusses the age of knighthood, covering such aspects as arms, armor, training, ceremonies, tournaments, the code of chivalry, and the Crusades.

A photo essay on ancient Egypt and the people who lived there, documented through the mummies, pottery, weapons, and other objects they left behind. Describes their society, religion, obsession with the afterlife, and methods of mummification.

Examines all aspects of the game of soccer: its history, rules, techniques, tactics, equipment, playing fields, competitive play, and more.

Explores the medieval world of castles looking at their history, how they were built, and what life was like inside them.

Photographs and text explore the anatomy and life cycle of trees, examining the different kinds of bark, seeds, and leaves, the commercial processing of trees to make lumber, and the creatures that live in trees.

Explores the changing ideas about the universe -- from the flat Earth to the modern-day research into black holes.

A photographic essay explores the history and technology of filmmaking, including how a set is built, how stunts are performed, how special effects are achieved, and how films are edited.

Describes the art and technique of how things are built, from mud huts to city skyscrapers.

Traces the development of railways from the first Babylonian rutways to the electromagnetic, driverless trains of today and describes how trains are built and operated.