Lockheed Vs. McDonnell Douglas: Which Commercial Aircraft Manufacturer Was More Popular?

#Boeing #Airbus #McDonnell Douglas #Constellation #Lockheed L-1011 TriStar #Eastern Air Lines #Boeing #McDonnell Douglas DC-9 #Northwest Airlines #Delta Air Lines #McDonnell Douglas DC-10 #American Airlines #Chicago O'Hare International Airport #McDonnell Douglas MD-11 #McDonnell Douglas #Lockheed