Edge books. Secret America

Describes a variety of secret and mysterious places in the United States, such as Mount Weather, the Pentagon, and Area 51.

Describes secret organizations and groups in the United States, including societies such as the Freemasons, government agencies such as the Central Intelligence Agency, and unseen groups such as the mole people who live in underground tunnels.

Describes a variety of secret and mysterious events in the history of the United States, such as the lost colony of Roanoke, the Salem witch trials, and the Manhattan Project.

Describes a variety of secret and mysterious treasures in the United States, such as sunken steamship gold, lost Army payroll, and the treasure at Neahkahnie Mountain.