Was Bob Cousy there at that time?
No, it was the year after Cousy left (he was only there 1 year as a player/coach, and the experiment failed miserably). Unfortunately, I never saw a game during that season - Cousy played sparingly, but I would have gotten to see the Big O as a Royal.
Robinson was originally a Royal, but the game I saw was during his second stint with the team. I was in the 6th grade and we attended the game on a class trip. The Royals actually edged the powerhouse Knicks that night - probably the highlight of the season.