Lucas was a terrific player, strong rebounder, good shooter, unbelievably poised and intelligent player.
Wrote more than 50 books after retiring, centered around memorization and education. Was considered a legitimate authority on memorization techniques and frequently gave seminars and demonstrations on those techniques. I forget the exact points but he once proved to a reporter he knew the exact amount of steps it took him from a specific starting point in Penn Station to his locker in the Garden (my parameters as an example of the feat, the steps involved were in the thousands).