This text focuses on the history of the development of hand-held celestial navigation instruments, offering descriptions of the tools used. It also includes a g

A poignant, uplifting, heartbreaking love story from the beloved bestselling, Pulitzer Prize–winning author: "To read a novel by Anne Tyler is to fall in love

The Navigation Case reveals the drama and sacrifice expended by America’s pioneering pilots’ first ever demonstration of air superiority, during the greates