The Man of Steel continues to defend America and explore spectacular locations in the fourth volume of the SUPERMAN ARCHIVES series. Introducing Clark Kent's loyal sidekick, Jimmy Olsen, this book of 1940s classics features tales in which Superman discovers an underground civilization beneath Metropolis, goes on a disastrous rampage while under hypnosis, meets an alluring mermaid and visits the lost city of Atlantis, becomes trapped in the Fourth Dimension, protects American naval weapons from international saboteurs, and battles the deadly costumed villain the Archer.