found: Work cat.: 89-48466: Bowers, P. Unconventional aircraft, 1990:p. 207 (flying automobiles) p. 208 (winged automobiles, roadable airplanes)
found: Strong, R. Strongmobile development report, 1973:p. iii (roadable airplanes, flying car) p. 1 (autoplanes) p. 35 (patent description: ground-air vehicle)
found: Zuck, D. An airplane in every garage, 1958:p. 27 (roadable airplane)
found: Letter from P. Stiles, Florida Inst. of Tech., 2/25/92(doing research on flying automobiles, suggests new subject heading, provides bibliography)
