Cultural and geographical exploration

Articles originally published in "National Geographic" chart the expansion of travel by automobile and railroad in the 1920s and its effects on American society.

Articles originally published in "National Geographic" present the life and accomplishments of Robert E. Peary, focusing on his explorations of the North Pole.

Presents differing viewpoints on the history of, and controversies surrounding, the Panama Canal, and features four personal narratives about its construction and the displacement of natives that resulted from it.

Text originally published in "National Geographic" describes travels through the Grand Canyon in the early years of the twentieth century, when it was relatively unexplored.

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.