Source 13

1. http://historyofvolleyball.net/olympic-volleyball/olympic-volleyball/
2. can not find author
3. --
4. Olympic volleyball has been documented as being introduced into the Olympics in 1924. However, at this point in time it was seen more as a demonstration event rather than actually being a part of the main Olympics. The concept of having Olympic volleyball actually came to be in 1964. There were a few games played after World War II and then soon after the volleyball era began for the Olympics and has continued ever since then.
5. yes
6. it has alot of discription and i can see it being the truth