My father worked a Mcdonnell as a aircraft mechanic. During a 1959 open house he took me into a hush house and sat me in the cockpit of a F3H. I was only 5 but still remember it. The Demon was only one of two single engine fighters Mc built. The other was the Goblin.
Very cool. There was a variant called the F3H-G that had two engines and even stronger resemblance to the F4. I think it’s interesting to see the “thought process” as the designers refine their ideas.
My dad was a test pilot at McDonnell and flew Demons, Voodoos and Phantoms. He was killed in the first F4 in 1959. Can’t help and wonder if they met.