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Hardcover. Condizione: Very Good+. No Jacket. Reprint. Operating manual for the Dalton E-6B type computer, developed by the late Lt. Philip Dalton, USNR, that became the standard for the US Army Air Forces & widely accepted by pilots & navigators. Applications of the computer to "the many major & minor problems of navigation as they concern the airman" are described, in 124 pages with diagrams, illustrations, & photos of airplanes throughout. Orig. published in 1944, this is the third reprint of that FIRST EDITION from Feb. 1950, with a new Preface by the authors. Hardcover with blue cloth-covered boards stamped in bright gilt to front & spine (somewhat faded here) is in VG+ condition: completely clean, binding strong & straight, pages creamy white & unmarked. Mild rubbing to extremities, slight bumping to corners. Fading & light soil to upper-inner corner of rear board. No DJ. Our photos depict the Exact book you will receive, never "stock" images of books we don't actually have! Same day shipping on all orders received by 2 pm Weekdays (Pacific time); later orders, weekends, & holidays ship very next business day.

Hardcover. Condizione: Very Good - Cash. Green cover with purple lettering to the cover and spine. Reprint of the original 1944 in 1950. Light reader wear and rubbing to the edges, corners, covers, and pages. Previous owner's name inside. The book is in great condition! Stock photos may not look exactly like the book.