S1·E6 Spruce Goose, T-Rex Skeleton, President McKinley Nightshirt, Art Heist, Johnstown Flood, Slinky

Artifacts include the "Spruce Goose" aircraft, a T-Rex skeleton, President William McKinley's torn nightshirt, empty picture frames from an art heist, a watch from the Johnstown flood, and the invention of the Slinky.