In 'The Young Engineers on the Gulf. Or, The Dread Mystery of the Million Dollar Breakwater' by H. Irving Hancock, readers are taken on a thrilling adventure as

Two young civil engineers build a railroad across quicksand while they fight off a dangerous gambler and his cutthroat followers.

In 'The Young Engineers in Mexico; Or, Fighting the Mine Swindlers' by H. Irving Hancock, readers are taken on an adventurous journey with a group of young engi

Reproduction of the original: The Young Engineers on the Gulf by H. Irving Hancock