==External links==*Film of United Airlines Boeing 247 NC13364 taking off from Vancouver Airport 1934*Gallery: Boeing 247 Images, including two of the interior and one of the retracted main gear* Boeing Model 247: First modern airliner* "From Mock Up To Latest Airliner," "Popular Mechanics", October 1932, early article on future Model 247* "Keeping Them In The Air" "Popular Mechanics", July 1935 photos and colored artwork of 247 pp.9-16
ISBN 0-517-69244-9.