When did in-game dunking become legal?

[bowlingref]

One thing that was done in Va was we had even numbers for our home uniforms and odd numbers for our road uniforms. My numbers were 20-21. That way all the ref had to keep up with was the number and not the color. We had to raise our hand if we commited a foul and yes we would try to get someone else to raise their hand if the fouling player was in foul trouble. A couple of the refs we had made a major deal out of it. I saw where one of them passed away the other day and my first thought was did he have to raise his hand to pass through the Perly Gates. We could not dunk either. Graduated H.S in 1970.