Dakota cipher : an ethan gage adventure.
(Book)

Sequel to: The Rosetta key.

Sequel: The Barbary pirates.

Ethan Gage wants to enjoy the fruits of victory after helping Napoleon win the Battle of Marengo, but an ill-advised tryst with Bonaparte's married sister has made that impossible. So now, with President Thomas Jefferson's blessings, Ethan and a mystic Norwegian, Magnus Bloodhammer, embark upon an expedition into America's western wilderness--dodging hostile Indians and a British seductress as they search for the mythical hammer of the Norse god Thor. The prize, which was allegedly carried to North America more than a century before Columbus arrived, leads them across a landscape no white man has yet traversed. Here Gage's skills will be tested as never before--as he braves frontier peril en route to the most incredible discovery of all time.