I heard a sportswriter found him living on the streets, and helped him get a job at Hughes Aircraft that he kept over 20 years.
I don't know if he was illiterate, but the NBA got him to speak to rookies about the importance of education.
The key to that story is that he had a college degree from Utah and was illiterate. I did an awful job guessing at the spelling. lol
Going back to the real student athlete days entails going back generations at this point.