Was it really Dr. Suess?
https://en.wikipedia.org/wiki/Nerd#Etymology
https://books.google.com/ngrams/graph?content=nerd%2Cnerds&y...
There are lots of "nerd" occurrences before 1950!
However, looking a bit deeper:
https://www.google.com/search?q=%22nerds%22&lr=lang_en&tbs=l...
These occurrences break down into a few categories:
- mis-recognition of "needs" or "herds", etc. - incorrect date assignment - possible foreign words
If you also found this interesting, I guess we both fit in Dr. Seuss's zoo.