Air Progress September 1974 Maule Rallye Aircraft Magazine Aviation

Air Progress Magazine March 1974 Lightplane Aircraft Fuel Crunch Aviation

Air Progress Magazine July 1974 Flight School Survey Aviation Aircraft

Air Progress Magazine November 1974 BD5 Aircraft Aviation Flying

Air Progress February 1974 BD5 JET Magazine Aviation Aircraft

Air Progress Magazine April 1974 Jet Racers BD-5 Aircraft Aviation Cutaway

Air Progress Magazine October 1974 General Aviation Survey Planes

Air Progress Magazine January 1974 Lightplane Research Reno Races Vintage