It was the pilots of the U.S. Air Mail service who made it possible for flight to evolve from an impractical and deadly fad to today's worldwide network of airlines. Nicknamed "The Suicide Club," this small but daring cadre of pilots took a fleet of flimsy World War I "Jenny" Biplanes and blazed a trail of sky routes across the country. In the midst of the Jazz Age, they were dashing, group-proud, brazen, and resentful of authority. They were also loyal, determined to prove the skeptics wrong. MAVERICKS OF THE SKY, by Barry Rosenburg and Catherine Macaulay, is a narrative non-fiction...