River Magic

Aimee and Brenda, fourteen-year-old orphans, meet in an alternate history version of St. Louis, Missouri Territory in 1822.

In this alternate history, slavery was abolished with the ratification of the U. S. Constitution in 1791. The Iroquois and Cherokee nations fought on the side of the colonies during the revolution and have retained their independence and formed an alliance with the United States against the western savages and the great powers of Europe.

While seeking a lost letter, the girls become involved in a conspiracy against the alliance.