I just saw this linked on Facebook; it is a new one to me, but looks like it has some interesting material. Most of the pages I clicked were relatively shallow, but there are a lot of them!
In which we learn that Dr Brainerd worked on ENIAC in 1946.
And I note that the term ‘nerd’ appears in 1950 or 1951. As for the term ‘brainiac’ that seems to be 1958. Or 1958.