Harcourt, Brace & Co., NY, 1936 (copyright). 1st Edition, 11th Printing (Feb. 1936) - stated. Preface by the Author. Illustrated by full-page B&W photo (pontoon plane 'Sirius') as frontis + numerous route maps by Charles A. Lindbergh. Dark blue boards, blue top-edge, float plane cover illustration, topographical end-papers, silver letters. Minor spine bumping, hd & ft, corners sharp. Blue top-edge slightly faded. All gilt is bright. P.O.'s neat bookplate, center of page across from Half-Title Page; P.O. name/address, in light pencil, middle of Half-Title Page - no other markings. Book is tightly bound, with just a touch of separation at the head- both hinges are sound. DJ is chipped & creased along the edges at top & bottom, corners. Light scuffs/shelf-wear to covers, here and there. Publisher's original price of $2.50, along top edge of both flaps. Now in a slightly-oversized Brodart sleeve. 255 pages.