I believe they have a cockpit display of the DC-4 at the Smithsonian Air and Space Museum. Look at the number of crew it took for long distant flying. They had to have a relief crew to allow the others to catch some sleep!
These were the 747's of the day. Just imagine.....flying at 7 to 9 thousand feet, through the weather, engines droning throughout the flight, but the in-flight service superb.....the golden days of early airline transport.