In This Review

The Ultra Americans: The U.S. Role in Breaking the Nazi Codes
The Ultra Americans: The U.S. Role in Breaking the Nazi Codes
By Thomas Parrish
Stein & Day, 1985, 352 pp
Purchase

Although the style is breezy to the point of frivolousness, the book adds details about the American team's contribution to British code-breaking operations during World War II, an extraordinarily popular subject.