Destination: Mexico. The Global Protection Force has summoned Secret Agent Jack Stalwart to Mexico to hunt down a stolen map leading to hidden Aztec gold. Sudde

An ancient stone with the location of Aztec treasure has been stolen from an ailing man's bedside table. Can Secret Agent Jack Stalwart track the thieves and st

Jack finally receives a coded message from his brother Max, possibly detailing his whereabouts. But duty calls, and Jack is whisked away to the sweltering savan

Jack ventures to Mexico, land of the ancient Aztecs, to save the legendary Montezuma's gold. In his attempt to thwart a group of unruly men absconding with part

A series of postcards introduces young readers to cross-sectional illustrations of such famous building as the Parthenon, the Colosseum, Hagia Sophia, Notre Dam