Title: The Unbreakable Code
First published: 1996
Description: Because John is afraid to leave the Navajo Reservation, his grandfather explains to him how the Navajo language, faith, and ingenuity helped win World War II.
Subjects: Ciphers, Navajo language, Indians of North America, Navajo Indians, Fiction, Grandfathers, World War, 1939-1945, Children's fiction, Mystery and detective stories, Indians of north america, fiction, World war, 1939-1945, fiction, Grandparents, fiction
LC classification: PZ7.H9185 Un 1996