J. Arthur Thomson. (Ed.). The Outline of Science. A Plain Story Simply Told. Third Volume. New York & London: G.P. Putnam's Sons, The Knickerbocker Press, 1922.
Working for he British Aerial Transport Company, Frederick Koolhoven designed the F.K.28 Crow. An ABC Gnat radial engine provided the power, and twin booms supported the tail section. First displayed at the First Air Traffic Exhibition in Amsterdam, it only flew once. Found to be underpowered, it was scrapped in 1920. Too bad--it'd be a lot of fun to buzz your neighbours!