Mongolia

By James E. Bosson, Patricia Ann Berger, Terese Tse Bartholomew, National Geographic Society U. S., Heather Stoddard

Mysteries of the Sahara

By National Geographic Society U. S.

Touring America Seventy Five Years Ago How the Automobile and the Railroad Changed the Nation

By National Geographic Society U. S.

Ancient Civilizations of the Aztecs and Maya

By National Geographic Society U. S.

Australia

By National Geographic Society U. S.

Text originally published in "National Geographic" discusses the geography, history, and people of the continent of Australia at the beginning of the twentieth century.

Hawaii and the Islands of the Pacific

By Arthur M. Schlesinger Jr., Fred L. Israel, National Geographic Society U. S.

Articles from issues of "National geographic" magazine describe the history and inhabitants of the Hawaiian Islands, New Guinea, Samoa, the Solomon Islands, and other Pacific island civilizations.

Lighthouses

By Arthur M. Schlesinger Jr., Fred L. Israel, National Geographic Society U. S.

Text originally published in "National Geographic" describes the lighthouse system around the coasts of the United States, from the eighteenth century to the early years of the twentieth century.

Rediscovering Ancient Egypt

By National Geographic Society U. S.

The Russian People in 1914

By National Geographic Society U. S.

Indian Tribes of the Americas

By National Geographic Society U. S.