Don Wildman investigates a president's cross-country road trip, a detective's plan to cut down on crime and an explorers dangerous quest to be the first to uncover the secrets of the Grand Canyon.
By entering your email address, you agree to our Terms of Use
and acknowledge the Privacy Policy.
discovery
and its affiliates
may use your email address to provide updates, ads, and offers.
To withdraw your consent or learn more about your rights, see the
Privacy Policy.