I took my son to Edward Airfare Base for an airshow.... it was spectacular! At the show:

There were many exhibits - one being a flying Zero. We were told, at the time, there were only 3 flying Zero's in the world. Others were being restored, however, so today there may be more in flying condition.

Snapped a photo of my son standing by it and as I type this it's on a shelf in my bedroom right in front of me.