Verifying the 1967 UFO landing at a Miami elementary school yard.

I did not witness this myself but remember it as the strangest event ever in Miami.  This was a highly populated area that the sighting centered on.  Mainly, an elementary school was closed because of UFOs!   It was in the papers, ie, Miami Herald and the Miami News.  The entire school witnessed this event, including teachers and administrators est at 700 people.  
Why this concerns me is that I had an Uncle that lived on Opa Locka Blvd at that time.  He could not get home for lunch from work via his normal route because the roads were blocked and detours were set up.  He saw something but would never talk about it to me.  All that he may have talked to have since passed.  
The way I remember what happened is that the UFO actually landed.  How in the world could this happen in a populated, modern country and it is all but forgotten?  Just out of curiosity I looked up the date to see if anything was in your records.  Well, I just about fell out of my chair when I read the account of the witness asking if any one saw what he saw and wondering if he really saw it.  
My God, how many more of these events have happened and time has just swept them too under a rug.
Witness indicates that date of incident is approximate.  We, too, wonder how many unreported sightings have occurred.  I estimate that of 10,000-20,000 sightings of genuine UFO's that have occurred, only one, or so, of the witnesses have ever thought to write down a description of the event.  PD